五年级上册简便算法题

10÷3.14-6.86÷3.14

37.68÷0.25÷4

3.75－(2.75－1.3)

37.56－(18＋7.56) 0.77÷14

4.5×9.8

0.7÷0.125

0.7÷0.25

2.5×3.2×12.5

12.5×9.6×0.25

3.75－(2.8－1.25)

37.65÷0.4÷0.25

3.125÷8÷0.125

37.65－4.75－3.25

25×6.4×12.5

3.6×0.25

10÷3.14-6.86÷3.14

答案

=(10-6.86)÷3.14 =3.14÷3.14 =1

37.68÷0.25÷4 =37.68÷(0.25×4) =37.68÷1 =37.68

3.75－(2.75－1.3) =3.75－2.75＋1.3 =1＋1.3 =2.3

37.56－(18＋7.56) =37.56－7.56－18 =30－18 =12 0.77÷14 =0.77÷7÷2 =0.11÷2 =0.055 4.5×9.8 =4.5×(10－0.2) =4.5×10－4.5×0.2

=45－0.9 =44.1 0.7÷0.125

=(0.7×8)÷(0.125×8) =0.56÷1 =0.56 0.7÷0.25

=(0.7×4)÷(0.25×4) =2.8÷1 =2.8

2.5×3.2×12.5 =(2.5×0.4)×(8×12.5) =1×100 =100

12.5×9.6×0.25

=(12.5×0.8)×3×(4×0.25) =10×3×1 =30

3.75－(2.8－1.25) =3.75＋1.25－2.8 =5－2.8 =2.2

37.65÷0.4÷0.25 3.125÷8÷0.125 37.65－4.75－3.25 25×6.4×12.5 =25×4×0.2×8×12.5 3.6×0.25 =(4－0.4)×0.25 3.4÷9＋5.6÷9 =

1250X0.037+0.125X160+12.5X2.7=12.5×3.7+12.5×1.6+12.5X2.7=12.5(3.7+1.6+2.7)=12.5X8=100 0.45x72+45x0.18+4.5=4.5x7.2+4.5x1.8+4.5x1=4.5(7.2+1.8+1)=4.5x10=45 50x0.13x0.2=50x0.2x0.13=10x0.13=1.3 3.4x7-1.5 2.33x0.5x0.4x5=2.33x0.5x2=2.33x1=2.33

0.4×125×25×0.8

=（0.4×25）×（125×0.8) =10×100=1000

1.25×（8+10） =1.25×8+1.25×10 =10+12.5=22.5

9123-（123+8.8） =9123-123-8.8 =9000-8.8 =8991.2

1.24×8.3+8.3×1.76 =8.3×（1.24+1.76) =8.3×3=24.9

9999×1001

=9999×（1000+1）

=9999×1000+9999×1 =10008999

14.8×6.3-6.3×6.5＋8.3×3.7 =（14.8-6.5）×6.3＋8.3×3.7 =8.3×6.3+8.3×3.7 8.3×（6.3＋3.7） =8.3×10 =83

1.24+0.78+8.76

=（1.24+8.76）+0.78 =10+0.78 =10.78

933-157-43

=933-（157+43） =933-200 =733

4821-998

=4821-1000+2 =3823

I32×125×25 =4×8×125×25

=（4×25）×（8×125）

=100×1000 =100000

9048÷268

=（2600+2600+2600+1248）÷26

=2600÷26+2600÷26+2600÷26+1248÷269 =100+100+100+48 =348

2881÷ 43

=（1290+1591）÷ 434

=1290÷43+1591÷43 =30+37

3.2×42.3×3.75-12.5×0.423×16 =3.2×42.3×3.75-1.25×42.3×1.6 =42.3×(3.2×3.75-1.25×1.6)

=42.3×(4×0.8×3.75-1.25×4×0.4) =42.3×(4×0.4×2×3.75-1.25×4×0.4) =42.3×(4x0.4x7.5-1.25x4x0.4) =42.3×[4×0.4×(7.5-1.25)] =42.3×[4×0.4×6.25] =42.3×(4×2.5) =4237

1.8+18÷1.5-0.5×0.3 =1.8+12-0.15 =13.8-0.15 =13.65

6.5×8+3.5×8-47 =52+28-47 =80-47

(80-9.8)×5分之2-1.32 =70.2X2/5-1.32 =28.08-1.32 =26.76

8×7分之4÷[1÷(3.2-2.95)] =8×4/7÷[1÷0.25] =8×4/7÷4 =8/7

2700×（506－499）÷900 =2700×7÷900 =18900÷900 =21

33.02－（148.4－90.85）÷2.5 =33.02－57.55÷2.5 =33.02－23.02 =10

（1÷1－1）÷5.1 =（1－1）÷5.1

=0÷5.1 =0

18.1＋（3－0.299÷0.23）×1 =18.1＋1.7×1 =18.1＋1.7

=19.8

还有的从书上找吧 已经写了21道了 赞同1| 评论 2011-2-11 16:44 知道778811 | 一级 小学六年级简便计算

1.(1/69+2/71)乘23+25除以71

=1/69*23+2/71*23+25/71 =1/3+(46/71+25/71) =1/3+1 =4/3

2.(1+1/2)乘(1-1/2)乘(1+1/3)乘(1-1/3)乘........乘(1+1/9)乘(1-1/9)

=3/2*1/2*4/3*2/3...*10/9*8/9

=1/2*10/9(中间的都约去了）

=5/9

3.1/2乘3+1/3乘4+.......+1/19乘20

=1/2-1/3+1/3-1/4+...+1/19-1/20

=1/2-1/20

=9/20

4.1/27+505/2727+131313/272727

=1/27+5*101/(27*101)+13*10101/(27*10101)

=1/27+5/27+13/27

=19/27

5.100-98+96-94+....+4-2

=(100-98)+(96-94)+...(4-2)

=2+2+...+2(共有25个）

=2*25 =50