Question

简便计算。（好的加100悬赏分，如果不够尽管提出来悬赏分不是问题，最重要答得对）。

0.125*0.25*32
25.07-4.98
4.375+2.9+9.625+7.1
（0.8*0.08）*12.5
（12.5+12.5）*25*8
1.25*44+43*1.25+1.25
3.56-1.81-0.19-0.59
2.39*39+8.61*39
2.8*3.5-1.8*3.5
8+8*（0.5-0.375）
0.4+1.25+3.6+0.75
0.24+0.16-0.24+0.16
0.4*1.7+5.6*1.7
0.8*3.2*1.25
1.83+9.5+0.17
3.74-0.18-0.74
3.6*3.5+3.6*6.5
5.9+9.5+0.1+0.5
23.2+57.6+6.8
2.5*3*0.4
0.9*0.04+2.1*0.04
4*7.5*2.5
4.75+14.63+0.22
4.5*0.4+5.5*0.4
18.75-0.43-4.57
7.6*2.4+2.4*2.4
12.5*7.5*8
23*4.5+27*4.5
7.5+2.5+7.5+3.5
0.2*0.125*0.4
0.25*0.9*0.4
0.6*0.9+0.6*0.1

Answer 1

1.看成5个0.5和5个2的积，结果是1
2.看成25+0.07-5+0.02=20.09
3.第一个数和第三个加，二和四加，等于24
思路
4.125*8=1000
5.25*8=200
6.44*1.25*2
7.中间两数相加再算
8.提取39
9.提取3.5
10.提取8
11.第一个数和第三个加，二和四加
12.第一个数和第三个算，二和四算
13.提取1.7
14.125*8=1000
15.第一个数和第三个数先加
16.第一个数和第三个数先减
17.提取3.6
18.第一个数和第三个加，二和四加
19.第一个数和第三个数先加
20.25*4=100
21.提取0.04
22.25*4=100
23.顺序计算即可
24.提取0.4
25.后两数先加
26.提取2.4
27.125*8=1000
28.提取4.5
29.前两数加，后两数加
30.125*4=500
31.25*4=100
32.提取0.6
...........真心不是人干的活啊！！有了过程，结果完全可自行解出吧？！

Answer 2

0.125*0.25*32
=0.125×8×(0.25×4)
=1×1
=1
 
25.07-4.98
=25+0.07-5+0.02
=20.09
 
4.375+2.9+9.625+7.1
=4.375+9.625+(2.9+7.1)
=14+10
=24
 
（0.8*0.08）*12.5
=0.8×(0.08×12.5)
=0.8
 
（12.5+12.5）*25*8
=25×4×25×2
=100×50
=5000
 
1.25*44+43*1.25+1.25
=1.25×（44+43+1)
=1.25×88
=1.25×0.8×110
=110
 
3.56-1.81-0.19-0.59
=3.56-0.59-(1.81+0.19)
=2.97-2
=0.97
 
2.39*39+8.61*39
=39×(2.39+8,61)
=39×11
=429
 
2.8*3.5-1.8*3.5
=3.5×(2.8-1.8)
=3.5
 
8+8*（0.5-0.375）
=8+8×0.125
=8+1
=9
 
0.4+1.25+3.6+0.75
=0.4+3.6+(1.25+0.75)
=4+2
=6
 
0.24+0.16-0.24+0.16
=0.24-0.24+0.16+0.16
=0.32
 
0.4*1.7+5.6*1.7
=1.7×(0.4+5.6)
=1.7×6
=10.2
 
0.8*3.2*1.25
=.8×1.25×3.2
=3.2
 
1.83+9.5+0.17
=1.83+0.17+9.5
=2+9.5
=11.5
 
3.74-0.18-0.74
=3.74-0.74-0.18
=3-0.18
=2.82
 
先悬赏一点分数，再继续做
 
3.6*3.5+3.6*6.5
 
5.9+9.5+0.1+0.5
 
23.2+57.6+6.8
 
2.5*3*0.4
 
0.9*0.04+2.1*0.04
 
4*7.5*2.5
 
4.75+14.63+0.22
 
4.5*0.4+5.5*0.4
 
18.75-0.43-4.57
 
7.6*2.4+2.4*2.4
 
12.5*7.5*8
 
23*4.5+27*4.5
 
7.5+2.5+7.5+3.5
 
0.2*0.125*0.4
 
0.25*0.9*0.4
 
0.6*0.9+0.6*0.1

Answer 3

0.125*0.25*32
=0.125×8×(0.25×4)
=1×1
=1

25.07-4.98
=25+0.07-5+0.02
=20.09

4.375+2.9+9.625+7.1
=4.375+9.625+(2.9+7.1)
=14+10
=24

（0.8*0.08）*12.5
=0.8×(0.08×12.5)
=0.8

（12.5+12.5）*25*8
=25×4×25×2
=100×50
=5000

1.25*44+43*1.25+1.25
=1.25×（44+43+1)
=1.25×88
=1.25×0.8×110
=110

3.56-1.81-0.19-0.59
=3.56-0.59-(1.81+0.19)
=2.97-2
=0.97

2.39*39+8.61*39
=39×(2.39+8,61)
=39×11
=429

2.8*3.5-1.8*3.5
=3.5×(2.8-1.8)
=3.5

8+8*（0.5-0.375）
=8+8×0.125
=8+1
=9

0.4+1.25+3.6+0.75
=0.4+3.6+(1.25+0.75)
=4+2
=6

0.24+0.16-0.24+0.16
=0.24-0.24+0.16+0.16
=0.32

0.4*1.7+5.6*1.7
=1.7×(0.4+5.6)
=1.7×6
=10.2

0.8*3.2*1.25
=.8×1.25×3.2
=3.2

1.83+9.5+0.17
=1.83+0.17+9.5
=2+9.5
=11.5

3.74-0.18-0.74
=3.74-0.74-0.18
=3-0.18
=2.82

先悬赏一点分数，再继续做

3.6*3.5+3.6*6.5

5.9+9.5+0.1+0.5

23.2+57.6+6.8

2.5*3*0.4

0.9*0.04+2.1*0.04

4*7.5*2.5

4.75+14.63+0.22

4.5*0.4+5.5*0.4

18.75-0.43-4.57

7.6*2.4+2.4*2.4

12.5*7.5*8

23*4.5+27*4.5

7.5+2.5+7.5+3.5

0.2*0.125*0.4

0.25*0.9*0.4

0.6*0.9+0.6*0.1

Answer 4

0.125*0.25*32
=（0.125*8）*（0.25*4）
=1

25.07-4.98
=25.07-（5-0.02）
=25.07-5+0.02
=20.07+0.02
=20.09

4.375+2.9+9.625+7.1
=（4.375+9.625）+（2.9+7.1）
=14+10
=24

（0.8*0.08）*12.5
=0.8*（0.08*12.5）
=0.8*1
=0.8

（12.5+12.5）*25*8
=25*25*8
=（25*4）*（25*2）
=100*50
=5000

1.25*44+43*1.25+1.25
=1.25*（44+43+1）
=1.25*88=1.25*（8*11）
=（1.25*8）*11
=10*11
=110

3.56-1.81-0.19-0.59
=3.56-（1.81+0.19）-0.59
=3.56-2-0.59
=1.56-0.59=1.56-（0.56+0.03）
=1.56-0.56-0.03
=1-0.03
=0.97

2.39*39+8.61*39
=（2.39+8.61）*39
=11*39
=（10+1）*39
=10*39+1*39
=390+39
=390+（10+29）
=（390+10）+29
=400+29
=429

2.8*3.5-1.8*3.5
=（2.8-1.8）*3.5
=1*3.5
=3.5

8+8*（0.5-0.375）
=8+8*【0.5-（0.125+0.25）】
=8+8*0.5-8*0.125-8*0.25
=8+4-1-4*0.25*2
=8+4-1-2
=12-1-2
=12-2-1
=10-1
=9

0.4+1.25+3.6+0.75
=（0.4+3.6）+（1.25+0.75）
=4+2
=6

0.24+0.16-0.24+0.16
=0.24-0.24+0.16+0.16
=0.16+0.16
=0.32

0.4*1.7+5.6*1.7=（0.4+5.6）*1.7
=6*1.7=6*（1+0.7）
=6*1+6*0.7
=6+4.2
=6+（4+0.2）
=6+4+0.2
=10+0.2
=10.2

0.8*3.2*1.25
=0.8*1.25*3.2
=1*3.2
=3.2

1.83+9.5+0.17
=（1.83+0.17）+9.5
=2+9.5
=11.5

3.74-0.18-0.74
=3.74-0.74-0.18
=3-0.18
=2.82

3.6*3.5+3.6*6.5
=3.6*（3.5+6.5）
=3.6*10
=36

5.9+9.5+0.1+0.5
=（5.9+0.1）+（9.5+0.5）
=6+10
=16

23.2+57.6+6.8
=23.2+6.8+57.6
=30+57.6
=87.6

2.5*3*0.4
=2.5*0.4*3
=1*3
=3

0.9*0.04+2.1*0.04
=(0.9+2.1)*0.04
=3*0.04
=0.12

4*7.5*2.5
=4*2.5*7.5
=10*7.5
=75

4.75+14.63+0.22
=4.75+14.63+(0.25-0.03)
=(4.75+0.25)+(14.63-0.03)
=5+14.6
=19.6

4.5*0.4+5.5*0.4
=(4.5+5.5)*0.4
=10*0.4
=4

18.75-0.43-4.57
=18.75-(0.43+4.57)
=18.75-5
=13.75

7.6*2.4+2.4*2.4
=(7.6+2.4)*2.4
=10*2.4
=24

12.5*7.5*8
=12.5*8*7.5
=100*7.5
=750

23*4.5+27*4.5
=(23+27)*4.5
=50*4.5
=50*(4+0.5)
=50*4+50*0.5
=200+25
=225

7.5+2.5+7.5+3.5
=(7.5+2.5)+7.5+(2.5+1)
=10+(7.5+2.5)+1
=10+10+1
=21

0.2*0.125*0.4
=0.2*0.4*0.125
=0.08*0.125
=0.01

0.25*0.9*0.4
=0.25*0.4*0.9
=0.1*0.9
=0.09

0.6*0.9+0.6*0.1
=0.6*(0.9+0.1)
=0.6*1
=0.6