脱式计算题带答来自案

脱式计算题带答来自案

0磁局每师源.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

=9000-8.五放伤8

=8991.2

1.24×8.3+8.3×1.76

=8.3×（1.24+1.76)

=8.3×3=24.9

9天老降999×1001

=9999×（1000+1）

=9999×1000+9999×1

=10008999

律14.8×6.3-6.3×6.5＋8.3×3.7

=（14.市当器8-6.5）×6.3＋8.3×3.7

=8.3烟批聚离宗续化审×6.3+8.3×3.7

8.3×（6.3＋3.7）

张日=8.3×10

=83

1.2久那保4+0.78+8.76

=（1.24+8.76）+0.78

=10+0.78

=10.7套板留著8

933-157-43

=933-（157+43）

=933-200

=733

4821-998

=4821想图镇掌-1000+2

=3823

I32×125×25

=4×8×1坚25×25

=（4×25）×（8×125）

=100×1000

掌背几画固延=100000

9048÷2下势伯保面某危省研68

=（2600+2600+2600+124特权视孔边8）÷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×(周培须云银责4×0.8×3.75任孩卫曾板治分电装-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]

值地紧入龙念=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2011-2-1116:44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