作文一:《小学三年级算术题[1]》1900字
50×2= 400×6= 22×3= 57÷9= 460-80= 23×4= 57×0= 41×3= 8000×5= 5050÷5= 240÷8= 230-40= 240×2= 0÷90= 130×4= 9300÷3= 1008×5= 28÷4= 0+8= 3×0= 900÷3= 25×4= 56÷2= 24×5=
15×4= 50×4= 310×7= 980÷7= 40×2= 105×4= 30×2= 120×3= 9000÷3= 10÷2= 840÷4= 2000×4= 21×3= 50×4= 10000÷5= 80÷4= 60÷9= 1000×7= 300×5= 240÷6= 500×9= 8000÷2= 860÷2= 60×7= 7×4+2= 21×3+4= 40÷2+1= 1+72÷8=
10×2= 72-47= 20×5= 7+15=
20÷2= 63÷3= 27×5= 10÷3=
40×9= 23×30= 84÷4= 5÷3=
12×4= 513×9= 4×815= 99÷9=
75÷5= 205÷5= 46×10= 24×20=
872-124= 27+127= 700÷5= 350+70= 591÷3= 8×122= 178÷2= 30×80=
800÷8= 265+85= 110×35= 901÷3=
0÷245= 0×245= 0+245= 245÷5=
3000-300= 605÷5= 50×50= 306÷3= 702-199= 480÷3= 120×80= 27×8= 62×15= 860÷4= 19×5= 40×20= 520-430= 51×17= 15×61= 87÷3= 91×31= 80÷10= 465÷5= 870÷8= 400×20= 210÷7= 4500÷9= 5×80= 300×30= 88+112= 380÷7= 36×8=
23×3= 12×30= 7×80= 48×10= 40×40= 40×10= 23×30= 60×50= 70×80= 10×68= 40×50= 30×21= 7×11= 50×70= 24×2= 30×70= 10×74= 50×10= 70×11= 30×40= 24×20= 12×20= 30×21= 20×70= 28×1= 20×13= 1×36= 10×19= 11×50= 30×30= 28×10= 20×50= 10×36= 30×33= 21×40= 12×10= 31×2= 14×20= 6×90= 20×33= 90×20= 20×13= 31×20= 22×3= 60×90= 39×10= 21×2= 44×20= 12×4= 22×30= 22×4= 30×80= 33×10= 50×90= 12×40= 220×3= 22×40= 90×40= 200×3= 41×20=
作文二:《小学三年级算术题02》900字
一、口算。 (48×0.33=16+20×0.5=26分)
50×2=400×6=22×3=57÷9= 460-80=23×4=57×0=41×3= 8000×5=5050÷5=240÷8=230-40= 240×2=0÷90= 130×4=9300÷3= 1008×5=28÷4=0+8= 4×0= 900÷3=25×4=56÷2=24×5= 15×4=50×4=310×7=980÷7= 40×2=105×4=30×2=120×3= 9000÷3=10÷2=840÷4=2000×4= 21×3=50×4=10000÷5=80÷4=
60÷9=1000×7=300×5=240÷6=
500×9=8000÷2=860÷2=60×7=
7×4+2=21×3+4=40÷2+1=1+72÷8= 9×4+4=2×8÷4=12×5÷2=36÷9+2= 30÷5+2=81÷9+7=6×5+7=7×4+9=
80×6×0=770÷7+1=80+20÷2=10-0÷5=
35-35÷7=7+3×0=6×8÷3=40+10÷2=二、笔算。 (24×1=24+6×1.5=33分)
1800×4=1040÷5=1206÷8=1356×7=
2080×3=246×3=56×5=9020÷3=
352÷4=871÷3=9180÷3=520×4=
7224÷6=535×5=7380÷9=6÷6=
624×9=1280+489=2849÷7=2550-1900=
640×4=5320÷7=8403÷4=
验算:验算:验算:
5320÷6=5200÷9=6016÷4=
验算:验算:验算:
三、计算。 (15×0.5=8分)要仔细噢!
1米-3分米=8100千克÷9=910克-210克= 9吨-4000千克=5044克-3000克=8000千克-5吨= 1千米-10米=2厘米+48厘米=1分米-9毫米=
36吨+60吨=100千米-85千米=1吨-400千克= 9千克 300克-7千克 200克=7吨 40千克-1吨 20千克= 63毫米+17毫米=()毫米=()厘米
四、脱式计算。 (每题 1.5分,共 20题,计 30分)
43×2+25×5602×4-245×3
64÷8+486÷6942÷3-100÷5
64÷4+64×45×7-48÷6
42÷7+36÷637×4+19×8
作文三:《小学三年级算术题》2400字
一、口算。(48×0.33,16+20×0.5,26分)
×250, 400×6, 22×3, 57?9,
460,80, 23×4, 57×0, 41×3,
8000×5, 5050?5, 240?8, 230,40,
240×2, 0?90, 130×4, 9300?3,
1008×5, 28?4, 0,8, 3×0,
900?3, 25×4, 56?2, 24×5,
15×4, 50×4, 310×7, 980?7,
40×2, 105×4, 30×2= 120×3=
9000?3= 10?2= 840?4= 2000×4=
21×3= 50×4= 10000?5= 80?4=
60?9= 1000×7= 300×5= 240?6=
500×9= 8000?2= 860?2= 60×7=
7×4,2, 21×3,4, 40?2,1, 1,72?8,
9×4,4, 2×8?4, 12×5?2, 36?9,2,
30?5,2, 81?9,7, 6×5+7= 7×4+9=
80×6×0= 770?7+1= 80,20?2, 10,0?5=
35,35?7, 7,3×0, 6×8?3= 40,10?2,
二、笔算。(24×1,24+6×1.5,33分)
1800×4, 1040?5, 1206?8, 1356×7,
2080×3, 246×3, 56×5, 9020?3,
352?4, 871?3, 9180?3, 520×4,
7224?6, 535×5, 7380?9, 6?6,
624×9, 1280,489, 2849?7, 2550,1900,
640×4, 5320?7, 8403?4,
验算: 验算: 验算:
5320?6, 5200?9, 6016?4,
验算: 验算: 验算:
三、计算。(15×0.5,8分)要仔细噢~
1米,3分米, 8100千克?9, 910克,210克,
9吨,4000千克, 5044克,3000克, 8000千克,5吨,
1千米,10米, 2厘米,48厘米, 1分米,9毫米,
36吨,60吨, 100千米,85千米, 1吨,400千克,
9千克300克,7千克200克, 7吨40千克,1吨20千克,
63毫米,17毫米,( )毫米,( )厘米
四、脱式计算。(每题1.5分,共20题,计30分)
43×2,25×5 602×4,245×3
64?8,486?6 942?3,100?5
64?4,64×4 5×7,48?6
42?7,36?6 37×4,19×8
作文四:《小学三年级算术题-20以内的加减法算术题1》1600字
姓名: 日期:
( )+ 1= 7 13+ 2=( ) 4+( )= 5 6+ 7=( ) ( )+ 5= 6 12+( )=18 ( )+ 5=17 3+( )=15 ( )+ 6=13 ( )+ 8= 9 6+ 1=( ) 4+11=( )
5+( )=12 19+ 1=( ) ( )+ 3=13 ( )+ 5=12 12+ 3=( ) 11+( )=15 12+ 7=( ) 6+ 5=( ) ( )+ 4=18 7+ 6=( ) 1+( )= 2 1+( )= 2
4+( )= 5 4+( )= 6 ( )+ 2= 9 6+( )= 7
1+19=( ) 15+( )=19 ( )+ 2=19 ( )+ 4= 6
2+10=( ) 1+12=( ) 3+( )=16 ( )+ 5=16 ( )+ 3=10 14+ 4=( ) 6+( )=17 ( )+ 1= 3
6+( )=14 ( )+ 5=17 ( )+ 5= 8 ( )+ 5= 8
2+( )=10 ( )+ 2= 3 12+( )=18 ( )+ 2= 3
5+( )= 7 3+( )=19 2+( )= 5 ( )+ 9=14 12+ 3=( ) ( )+ 3=15 4+ 4=( ) 2+18=( ) ( )+ 1= 2 ( )+ 1= 3 2+( )= 8 ( )+12=19 ( )+ 5= 7 16+ 2=( ) ( )+ 6=12 10+ 5=( ) 18+ 1=( ) 9+ 5=( ) 9+ 7=( ) ( )+16=18
4+16=( ) 6+11=( ) ( )+ 3= 6 3+( )=10 11+( )=18 ( )+ 2= 8 ( )+ 2= 4 ( )+ 2=10
7+( )=17 9+ 9=( ) 11+( )=14 ( )+ 3=13
1
( )+ 8= 9 ( )+15=17 12+ 1=( ) 1+( )= 6 ( )+ 2= 3 ( )+ 1= 2 4+12=( ) 15+ 4=( )
4+( )=14 1+( )= 2 6+( )= 9 4+( )=12 ( )+ 6=16 4+ 3=( ) 7+ 7=( ) 9+ 2=( ) 10+( )=15 ( )+ 2= 4 10+ 6=( ) ( )+ 1= 1
? 你真棒 ? 还不错 ? 要加油
随机加法, 20以内含进位加法
2
作文五:《小学三年级上学期算术题 2》4800字
120-40= 402×5= 25×4= 450×0=
360-90= 11+60= 630×3= 560+40=
72-24= 9+50= 630+70= 120×5=
24×5= 70×8= 250×5= 14+40=
880×2= 40×8= 57-28= 801×9=
120+20= 250×1= 28+68= 100×0=
30×6= 18×3= 902×1= 17×4=
68-4= 48-16= 70×2= 200×8=
280-70= 320×8= 30×6= 180-60=
140-5= 125×8= 560+80= 150×2=
700×2= 72×3= 42+30= 902×6=
590+70= 800×5= 440×0= 25+16=
303×3= 12×2= 470+70= 64×0=
25×8= 72×6= 20×6= 90×3=
420×6= 280+40= 55×5= 48×4=76×9= 86×4= 15×8= 29×7=
50×2= 80×5= 200×8= 850-650=
80+140= 4×100= 3000×6= 23×4=
860-600= 20×9= 30×9= 500×8=
23×3= 200×4= 7×5= 42+36=
28+0= 31-29= 40×5= 8×90=
34×2= 110+990= 25×4= 780-620=
270+15= 12×4= 8×8= 9×500=
0×55= 500×6= 57+8= 18×3=
205×3= 130×3= 602+30= 110×6=
50×9= 13×6= 100×9= 596+60=
12×8= 9×5= 13×5= 300×8=
25+80= 110×7= 35+35= 800×9=
25×2= 240+9= 9×17= 2000×5=
600×3= 42×5= 160-90= 85+20=
79-45= 46-15= 84-62= 46+54=
57-20= 38+9= 94-23= 70+38=
29+78= 90-61= 70×5= 80×5=
14×5= 300-84= 88+16= 210-77=
140×2= 280×7= 90+81= 670-23=
51×3=26×2= 26×13= 8×21=
241+69= 27×7= 6×37= 66×5=
554+16= 400-18= 48×12= 100×5=
3100+90= 277+43= 243+38= 80×4=
100-25= 180+147= 77×7= 236+47=
8×11= 13×9= 4×55= 449+64=
80×5= 23×5= 79×8= 510-369=
240-199= 600-133= 6×56= 963-36= 30×9= 60×9= 70×9= 54×9=
66×5= 20×1= 78×5= 80×8= 66×8= 77×7= 14×7= 50-10= 63×9= 73×5= 55×5= 240×4= 70×9= 73×9= 79×6= 63×4= 160×2= 53×8= 14×5= 69+25= 22×3= 15×5= 69×9= 14×7= 79×4=33×4= 140×2= 77×9= 66×9= 88×3= 43×3= 50×8= 69×2= 77×5= 99×5= 45×2= 60×49= 76×5= 66×4= 56×6= 66×5=30×5= 50×9= 60×6= 70×2= 60×9= 20×7= 60×7= 50×2= 60×9= 80×6= 50×7= 70×6= 50×2= 1000×5= 14×3= 60×8= 50×3= 100×5= 110+35= 19×5= 90×8= 60×7= 120×6= 90×7= 15×9= 6×50= 14×7= 150-31= 60×5= 109+19= 80×9= 1400×7= 240×3= 70×5= 24×6= 60×9=150×3= 200×4= 80×9= 29×5= 50×6= 60×9= 70×7= 120×6= 19×6= 90×7= 70×7=
60×2= 120×2= 240×3= 9×60=
70×7= 30×9= 70×5= 88×4=
604+108= 30×3= 7×80= 808+120= 120×4= 20×3= 24×2= 8×90=
108+532= 29+31= 6×15= 7×80=
70×7= 450×2= 77×7= 3×25=
9×10= 30×5= 131-50= 888+111=
5×18= 10×2= 700-66= 2005-50=
907+120= 42×3= 3×70= 60×6=
400×8= 10×5= 10×4= 70×5=
770-510= 70×5= 21×2= 81×9=
7×60= 632-110= 3×90= 24×6=
80×6= 8×70= 560×8= 5×80=
28×7= 60×9= 9×90= 810×9=
6×10= 90×8= 160×2= 6×90=
550+89= 7×100= 90×7= 140×2=
50×4= 577-110= 9×20= 89+110=
240-80= 60×7= 89×2= 8×40=
70×2= 320+40= 40×9= 11×1=
60×8= 90×3= 450×5= 3×90=
300×5= 60×9= 90×6= 560×8=
9080-1520= 5×90= 540×9= 100×5= 70×4= 70×7=17×7= 7×19=
70×5= 96×3= 240+760= 30×3= 2100×3= 54×9= 68×2= 88×4= 99×9= 39×5= 480+429= 34×7= 120×4= 36×8= 54×6= 300-171= 45×3= 48×4= 66×6= 64×8= 450×2= 656+17= 129-31= 45×3= 48×4= 109-50= 90+15= 51×3= 720-698= 869+72= 96+29= 24×2= ·26×9= 613+79= 540-136= 184+38= 256-91= 260+940= 679-= 8×25= 37×3= 23×7= 8×21= 79-45=
46-15= 84-62= 46+54= 57-20= 38+9= 94-23= 70+38= 29+78= 90-61= 70×5= 80×5= 14×5=
300-84= 88+16= 210-77= 140×2= 280×7= 90+81= 670-23= 51×3= 26×2= 26×13= 8×21= 241+69= 27×7= 6×37= 66×5= 554+16= 400-18= 48×12= 100×5= 3100+90=
277+43= 243+38= 80×4= 100-25= 180+147= 77×7= 236+47= 8×11= 13×9= 4×55= 449+64= 80×5= 23×5= 79×8= 510-369= 240-199= 600-133=15×7= 7×14= 200-19= 450+510= 240-80= 69×3= 210+70= 540-90= 3×92= 88×4= 77-11= 33×5= 480×6= 14×7= 120×4= 20×8= 540×6= 300-50= 45×3= 48×4= 66×3= 640+220= 450×2= 65+17= 129-31= 45×3= 480×4= 100-50= 90+15= 51×3= 720×8= 86+72= 96-29= 240×2= 26-20= 61+79= 140-36= 184-38= 256-89= 260-13= 670-23= 4×25= 37×2= 23×4= 80+21=88-18= 42×5= 64×8= 60×6= 9×60= 88+16= 300×5= 70-38= 44×4= 90+81= 34-28= 15×6= 210-77= 810×9= 606-15= 18×5= 37-19= 70×4= 140×2= 317+109= 48×4= 7×51= 31×2= 242+38= 24+69= 27+63=
16+37= 60×5= 55+16= 40-18=
48×2= 100+36= 310+90= 27+43=
24+38= 84×4= 100-25= 180+14=
280×7= 23+47= 8×11= 13×20=
14+55= 44+64= 80-21= 25×3=
70×8= 210-36= 240×3= 60-33=
15×5= 7×13= 200×4= 450×5=
240×8= 69×3= 210×7= 540×9=
3×90= 84×4= 77×7= 33×3=
48×4= 14×5= 12×4= 20×8=
54×6= 300×5= 39×3= 48×4=
66×3= 64×2= 45×2= 65+17=
12×7= 46×1= 48×4= 100×5=
99×3= 630×9= 720×8= 86×2=
96×3= 24×2= 26×2= 61+70=
14+36= 18+4= 24+3= 26×2=
67-23= 500-425= 37×2= 23×4=
80×2= 300-146= 133+18= 462-36=
240×4= 60×4= 852-= 753+14=
作文六:《小学三年级上学期算术题 3》300字
50×2= 80×5= 200×8= 850-650= 80+140= 4×100= 3000×6= 23×4= 860-600= 20×9= 30×9= 500×8= 23×3= 200×4= 7×5= 42+36=
28+0= 31-29= 40×5= 8×90=
34×2= 110+990= 25×4= 780-620= 270+15= 12×4= 8×8= 9×500=
0×55= 500×6= 57+8= 18×3=
205×3= 130×3= 602+30= 110×6= 50×9= 13×6= 100×9= 596+60= 12×8= 9×5= 13×5= 300×8=
25+80= 110×7= 35+35= 800×9= 25×2= 240+9= 9×17= 2000×5= 600×3= 42×5= 160-90= 85+20=
作文七:《小学三年级易错数学算术题》27900字
(1)注意下面算式的规律,想想如何计算可以快速得出答案: 99×1=99 99×2=198 99×3=297 99×5= 99×7= 99×9=
(2)想想可以用什么方法快速得出答案:
1+2+3+。。。。。。+100=
1+2+3+。。。。。。+1000=
(3)厚度最接近1厘米的物体是(正确的打?): 文具盒( )电话卡( )数学书( )电视机( ) (4)下面最小的度单位是(正确的打?):
米( )分米( )厘米( )毫米( )
(5)用一辆6吨的货车送下面的货物,要让运输的次数最少,要如何运,请设计一种方案来:
品种水泥沙子石子砖头钢材
重量2500千克4吨6吨9吨2500千克
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
(1)甲数是87,乙数是79,甲、乙两数的和是( );
(2)下面有8组数字分别是:1、2、3、4、5、6、7、8,请分
别用它们组成两个数,使它们的和是1000,请你写出两个符合
要求的算式来:
( )+( )=1000
( )+( )=1000
(3)下面各题计算有错误吗,有错误请改正:
(4)列竖式计算:
234-179= 462+329= 892-489=
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
我会数学
(1)kiki家到学校有几条路,哪条路远,要走多少米,
(2)kiki放学要先去一下托管,然后再回到家,他要走多少米,
(3)kiki从银行到托管最少要走多少米,
(4)请你提出一个数字问题,并解答。
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
(1)下面各题计算有错误吗,有错误请改正:
(2)请问:255+45=310做得对不对,你哪些方法,
(3)KIKI昨天到超市买了一桶元的油和78元的洗发水,
她付给收银员203元,你觉得她付的对了吗,为什么,
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
(1)请从111、222、333、444、555、666、777这七数中,挑出六个填在下面的括号里,使等式成立。
( )+( )=( )+( )=( )+( ) ( )+( )=( )+( )=( )+( ) ( )+( )=( )+( )=( )+( ) (2)请在里真上合适的数字
(3)长方形和平行四边形不同在哪里,说说看:
(4)下图一共有多少个平行四边形,
(5)算出下面图形的周长:
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
(1)右图空白部分和阴影部分的周长哪个长,
(2)下图中,每个小正方形都一样大,那么哪个图形的周长最
长,为什么,
(3)用4个边长为1厘米的正方形拼成长方形或正方形,有几
种拼法,所拼图形的周长各是多少,请把它们画出来。
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
(1)老爸用200米长的栅栏围一块地,如右图,这些栅栏够用吗,为什么,
(2)在一张长5分米、宽3分米的长方形纸板上剪一个最大的正方形,所剪正方形的周长是多少,
(3)一棵大树干一周的长度大约是410厘米,小朋友朋两手平举的长度是大约130厘米,至少需要多少个小朋友手拉手才能把树干围成一圈,
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
(1)请算出下面图形的周长。(单位:厘米)
(2)一个边长为16分米的正方形对折成两个长方形,第个长方形的周长是( )分米。
(3)列竖式计算
45?5= 72?8= 54?5=
(4)钟面上,时针在9和10之间,分针指向10,秒针指向2,这是的时间是( )时( )分( )秒; (5)请画出下面钟表的指针(时针和分针)
accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
(1)8个300的和是( ),再加上2个300是( ) (,)新区小学三年级四个班的同学去科技馆,每班人数如下:
班级一班二班三班四班
人数42人43人49人53人 科技馆管理处规定:团体票每人,元,全年段一共要付多少钱,你有几种算法,说说看,再选一个你最喜欢的方法解答。
(,)看看下面算式有错吗,有错的地方请订正
(,)填一填,算一算
先算:( )×( ),( )
再算:( )×( ),( ),( )
最后:( )×( ),( ),( )
(,)口算
202×6? 104×4? 300×6= 3×7= 110×4= 221×4= accountable for the violation, Had a negative impact on society. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, the initiative to accept social supervision. Give full play to the role of the news media, widely publicized safety production areas to carry out the "four winds" special significance, focus, work measures, dynamic work, the report published telephone. Launched the employees and the whole social supervision and reporting production safety and harm the interests of the masses, the formation of a strong prevention and treatment of the special rectification work atmosphere. 2, enhance political concentration. To strengthen the ideological and political construction, always adhere to the correct political line, politics Governance position, political orientation, political road, continuously enhance political acumen and political discernment, firm road confidence, theory system of self-confidence and self-confidence. To further strengthen the theory of armed Marx doctrine of Chinese consciously use the latest achievements of the armed mind, guide practice and promote the work. With a high degree of political consciousness, the Bureau take the lead in-depth study to implement the spirit of general secretary Xi Jinping's important speech series, and timely to the cadres and workers to study and implement of special supervision and inspection. 3, focus on remediation Yung lazy, scattered. "Cadres and carry out" mediocre, lazy, scattered "special rectification action, strengthen dedication, strong quality", The tree image, team spirit and the socialist core values education, vigorously to create a pioneering spirit, unity and struggle, serious and lively atmosphere. Take a thorough investigation, and severely punish free, absenteeism, tardiness, AWOL behavior, and resolutely put an end to work time on the Internet stocks, playing games, watching entertainment phenomenon. (five) are failing to buck passing the problem of lack of awareness of the overall situation. The individual members of the team too much emphasis on personal interests and the interests of small groups, prior conditions, the first hit "small abacus". The lack of big talk about the principle of small speaking style, have something to say, not behind talking about, no more Tricks of consciousness and self-discipline, relegates, passing each other, not unite to form a good atmosphere, and sometimes even against each other. A few members of the team that is the power sector in the safety supervision department, safety supervision department is working to better cope with personal interests, perfunctory in the daily supervision process, the illegal behavior of enterprise there do not want to offend people speak hard, to relax the stringent requirements of the enterprise. The rectification measures: (LED Le
作文八:《二年级下册数学算术题》2900字
小学数学二年级下册口算题 8÷2= 32÷8= 8÷1= 9×9= 84+7= 80-44= 1800-900= 420+80= 500-60= 89-8= 64-8= 34+9= 14÷7= 5+58= 64÷8= 6×3= 9×9= 72÷8= 78+15= 83-20= 43-30= 9÷1= 7÷7= 96-42= 58-36= 5×7= 72÷9= 36÷6= 81÷9= 42+13= 24÷3= 24+8= 27-3= 42+13= 42-6= 7+44= 42÷7= 64-8= 21÷3= 4×8= 54÷9= 49÷7= 42÷7= 35÷7= 19+41= 130+80= 46-8= 8×5-7= 9×3-8= 30÷6= 36÷4= 1800+200= 93-80= 7×8= 73-4= 72÷8= 64-8= 24×0= 27÷9= 53+8= 4×9= 8÷2= 32÷8= 8÷1= 9×9= 84+7= 80-44= 420+80= 500-60= 89-8= 64-8= 34+9= 14÷7= 5+58= 64÷8= 6×3= 9×9= 72÷8= 78+15= 83-20= 43-30=
9÷1= 7÷7= 96-42= 58-36= 5×7= 72÷9= 36÷6= 81÷9= 42+13= 24÷3= 24+8= 27-3= 24÷4= 7+63= 9×4= 36÷6= 9×7= 56÷8= 28+6= 7×5= 36+4= 30÷5= 63÷9= 64÷8= 38+16= 45÷5= 7÷1= 25+23= 12+35= 27+71= 46+33= 40÷8= 21+15= 36+22= 59+18= 72+24= 41-29=44-9= 72+16= 43+32= 35-8= 56÷7=8×2= 7+56= 56÷7= 12÷6= 4×2=21-7= 7×3= 8÷8= 32÷4= 80-9= ( )×6=30 42÷7= 35-6= 28÷7= ( )×8=48 21÷3= 36÷4= 18÷2= 63÷7= 9×6= 9×9= 46+10= 65+40= 81÷9= 55-20=9+46= 9÷3= 9÷9= 58+32= 80-28= 33+60= 54÷6= 40÷8= ( )×4=20 61-13=15÷5= 9×3= 42-15= 18÷9= 180-60=72-40= 47+8= 14+85= 61+27= 170+20=5×9=
7×7= 73+16= 60+300= 10÷5= 83-29= 5×6= 43-17= 21+27= 32÷8=30÷6= 36÷4= 64÷8= 5÷1= 15÷3=16÷8= 42÷6= 400+50= 38+26= 93-8=49÷7= 6×9= 56-30= 35÷5= 27+25= 27÷9= 53+8= 4×9= 8÷2= 32÷8= 8÷1= 9×9=84+7= 80-44= 1800-900= 4900-1800= 420+80= 430+1000= 500-60= 89-8=64-8= 34+9= 14÷7= 5+58= 64÷8=6×3= 9×9= 72÷8= 78+15= 83-20=43-30= 9÷1= 280+450= 7÷7= 5×7= 3600+5800= 8×9+21= 4600+4700= 730-190= 3700-370= 8500-5500= 3200+5100= 96-42= 1200-400= 830-300=800+900= 58-36= 7000+3000= 72÷9= 36÷6= 81÷9= 42+13= 24÷3= 24+8= 27-3= 42+13= 42-6= 7+44= 42÷7= 64-8= 21÷3= 4×8=
19+41= 24-6×3=4×8-5= 27÷3+6= 56÷7-3= 49÷9+7=4×3÷2= 8÷1=
6÷3×7= 8÷4×3= 6×5+37= 12÷4+18= 16÷4×8= 8÷4+48= 25÷5+36=6×8— 42= 2×8÷4= 8×9÷9= 36÷6÷3= 9÷9×6= 42÷7×6= 96-80+7= 64-40-8= 40-4+20= 7×5-8= 14÷7+25= 15÷5+8= 8×9-8= 1×2+20= 16÷8+30= 7×7+8=54÷6+33= 510+200= 15-45÷9= 11-40÷8= 7+1×8= 130+80= 46-8= 8×5-7= 9×3-8=30÷6= 36÷4= 4×5+44= 48÷8+7= 1800+200=6×5+37= 7×8= 73-4= 93-80= 10-8÷1= 3×8÷4= 7×6+10= 72÷8= 64-8= 24×0= 71-7+30= 6+2×8= 35-9= 70-5×9= 8×9+21=27÷9= 53+8= 4×9= 8÷2= 32÷8=800-900= 80-44= 9×9= 4900-1800= 420+80= 430+1000= 500-60=89-8= 64-8=
84+7= 6×3= 9×9= 72÷8= 78+15= 83-20= 43-30=9÷1= 280+450= 3600+5800= 8×9+21= 4600+4700= 730-190= 3700-370= 8500-5500= 3200+5100= 96-42= 58-36= 5×7= 72÷9= 7÷7=36÷6= 81÷9= 42+13= 24÷3= 24+8= 27-3=42+13= 42-6= 7+44= 42÷7= 64-8= 21÷3=4×8= 54÷9= 49÷7= 42÷7= 35÷7= 19+41=24-6×3= 4×8-5=
1200-400= 830-300= 7000+3000= 800+900= 27÷3+6= 56÷7-3= 49÷9+7= 4×3÷2= 6÷3×7= 8÷4×3=6×5+37= 12÷4+18= 16÷4×8= 8÷4+48=25÷5+36= 6×8— 42= 2×8÷4= 8×9÷9= 36÷6÷3= 9÷9×6= 42÷7×6= 96-80+7=64-40-8= 40-4+20= 7×5-8= 14÷7+25=15÷5+8= 8×9-8= 1×2+20= 16÷8+30
7×7+8= 1800+200= 93-80= 6×5+37=10-8÷1= 7×8= 73-4= 3×8÷4= 7×6+10=72÷8= 64-8= 24×0= 71-7+30= 6+2×8= 35-9= 48÷8+7= 70-5×9= 8×9+21= 54÷6+33= 510+200=7+1×8= 130+80= 46-8+234= 8×5-7= 53+45-46= 9×3-8= 30÷6+4=
36÷4= 4×5+44= 11-40÷8= 8×9-8= 1×2+20= 16÷8+30= 7×7+8= 54÷6+33= 510+200=
作文九:《三年级第二课用电脑做算术题》800字
第二课 用电脑做算术题
教学目标
1、掌握计算器的启动和关闭的方法。
2、学会“计算器”的使用方法。
3、教育学生在使用电脑时要正确开关电脑,爱惜鼠标。
教学任务
学会“计算器”的使用方法。
教学方法
任务驱动
教学重点、难点
学会“计算器”的使用方法。
教学过程
一、教学引入:(5分钟)
提问:
1、世界上第一台电脑是在哪一年诞生的,(1946)诞生的地点是哪个国家,
(美国)它有多重、多大(30吨、四间课室大),
2、我们都见过些什么样的电脑,(台式电脑、掌上电脑、笔记本电脑)
二、新授:(15分钟)
1、启动计算器程序
开机后,我们用鼠标来操作电脑。
使用鼠标时应将鼠标平放在鼠标垫或桌面上,右手握住鼠标,食指和中指自然地放在左键和右键上,手心微微隆起。
移动鼠标,我们看到有一个指针在屏幕上移动,这个指针就是鼠标的指针。
用食指快速按下鼠标的左键后放开,鼠标会发出清脆的“嘀哒”声,这种操作叫“单击”。
现在让我们单击【开始】->【程序】->【附件】->【计算器】,启动计算器程序吧~
2、Windows的窗口
程序启动成功后,通常会在屏幕上打开一个窗口,称为Windows的窗口。 【试一试】
分别单击计算器窗口上的,最大化与最小化窗口,观察窗口的变化。关闭计算器窗口后,重新启动计算器程序。
四、用计算器计算
电脑是个计算高手,它本来的名字叫计算机。
计算器:计算器能又快又准地计算出复杂的算术题。我们来猜猜(加减乘除)这四个键都有些什么作用。小键盘区中乘号和除号在这里改头换面了,分别变成了“*”和“/”,使用时可别弄错了。当需要清除计算器中的结果,继续进行下一次计算时,可以按CE键将白色框中的数字清除掉。
游戏:比一比谁是神算子
998+6668=
9999*889=
10257-269=
7684/452=
三、思考与练习(15分钟)
四、总结与讲评(5分钟)
作文十:《小学三年级的算术题你会做吗?》1300字
小外孙子今年上小学三年级下学期,从这学期开始,他喜欢自己独立完成家庭作业,不让我们进行辅导完成作业。但间或会有一些难题,他还得问我怎么做。
前几天,他在做算术作业时,就遇到三道题不会做,问我怎么做。我拿过题来一看,就有些吃惊。由于我不了解现在小学算术教学大纲的要求,无法对其难度是否得当做出判断。但给我的感觉是,这三道题对三年级的小学生来说,确实是难度太高了一些。
不信请看这三道题(见《新编新课程能力培养三年级数学下》北师大版):
1、一个自然数的末尾添上一个“0”得到另外一个数,这两个数相差108,原数是多少?
2、已知九个数的平均数是72,从中去掉一个数后,余下的数的平均数是78,去掉的数是多少?
3、由
,推出乘数和被乘数各是多少?
各位网友,你们能很快得出答案吗?估计得费些心思。
第一道题,我在想的时候,小外孙子也在想,很快他猜出是“12”,他是从108加多少尾数是“0”猜到的。
我给他是这样分析的:末尾添上一个“0”得到的另外一个数,一定比原来的数大,而且个位数是0;由这两个数相差108,可以得出原数的尾数是“2”,因为只有2,加上8,个位数才得“0”,符合另外一个数的个位数是“0”这个条件;由原数的尾数是“2”,可以得到另外一个数(即将原数末尾加“0”后)的十位数是“2”;由此,还可以推出原数的十位数只能是“1”,因为只有是1,加上进位的1(由8加2得来)才得2;所以,原数是“12”。
第二道题,小外孙子没有想出解决办法。
我给他是这样分析的:不管这九个数每个具体是多少,反正由已知九个数的平均数是72,就知道这九个数的和是72×9=648;同理,由去掉一个数后,余下的数的平均数是78,知道剩下八个数的和是78×8=624;八个数的和比九个数的和少了“24”,就是去掉的那个数;所以去掉的数是24。
第三道题,我是一步步帮助外孙子推算出来的。
根据乘法的竖式计算方法,由最下面的8,推测出黄圈的数是8;由此断定黑方块和蓝方块的数只能是2、4(或者4、2)及8、1(或者1、8),但蓝方块的数不可能是2、4、8,因为无论2、4、8,其与8的乘积会是三位数,而从题中的式子看是两位数(绿圈和黄圈组成的是两位数),所以蓝方块只能是1;同样的道理,红方块的数不可能大于2,只能是1;所以,乘数是11,被乘数88。
自己觉得说得有些啰嗦,但不啰嗦,外孙子听不明白。
记得上大学的时候,老师对我们说,你们虽然是学数学专业的,但你们不一定能给小学生讲明白算术课。主要是告诉我们,把深奥的问题用粗浅的、直白的方法讲清楚是很不容易的。
现在经常辅导外孙子学习,又一次体会到了这一点。
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引用:以下是周确发表的:
看后还真“头痛”;我最怕小学五年级数学中的“追JI”应用题!
这题是个错题,88乘11不会产生两数的,只能产生3位
发布者 :山在生长?(2010-11-16 21:23:32)? 回复
我看第三题本来就是道错题,88、11相剩永远也不会只有两位数。
博主回复
题目没有错,
竖式子最后结果,本来就是表示这两个数的积是三位数。你从哪儿看出是两位数?
发布者 :山在生长?(2010-11-16 21:20:55)? 回复
看后还真“头痛”;我最怕小学五年级数学中的“
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