Question

简便计算题， 悬赏100分！！

2.4乘1.8减4.8乘0.4
3.7乘8.7加6.2乘8.7加0.87
4.2乘6.5除以1.3
4.6除以（0.4乘2.3）
3.6除以4.8乘0.8
（6.4加3.2)除以8
3.2乘0.1加6.32乘9
11.26减8.73加2.73
好的加分， 是简便算法，说是用计算计算的滚开
要有过程，不要光有结果

Answer 1

2.4*(1.8-0.8)=2.4
8.7*(3.7+6.2+0.1)=87
4.2*5=21
4.6/2.3/0.4=2/0.4=5
3.6/(4.8/0.8)=3.6/6=0.6
6.4/8+3.2/8=0.8+0.4=1.2
0.32+6*9+0.32*9=54+3.2=57.2
11.26-(8.73-2.73)=11.26-6=5.26

Answer 2

2.4乘1.8减4.8乘0.4 =2.4*1.8-2.4*2*0.4
=2.4*（1.8-0.8）
=2.4
3.7乘8.7加6.2乘8.7加0.87 =3.7*8.7+6.2*8.7+0.1*8.7
=8.7*(3.7+6.2+0.1)
=8.7*10
=87
4.2乘6.5除以1.3 =4.2*(6.5/1.3)
=4.2*5
=21

4.6除以（0.4乘2.3） =(4.6/2.3)/0.4
=2/0.4
=5

3.6除以4.8乘0.8 =(0.8/4.8)*3.6
=(1/6)*3.6
=0.6

（6.4加3.2)除以8 ==6.4/8+3.2/8
=0.8+0.4
=1.2

3.2乘0.1加6.32乘9 =0.32+6.32*9
=0.32+6-6+6.32*9
=6.32-6+6.32*9
=6.32*1-6+6.32*9
=6.32*(1+9)-6
=6.32*10-6
=63.2-6
=57.2

11.26减8.73加2.73=11.26-(8.73-2.73)
=11.26-6
=5.26

Answer 3

楼住你好
原试等
一
=2.4*1.8-0.8*6*0.4
=2.4*1.8-0.8*（6*0.4）
=2.4*1.8-0.8*2.4
=2.4*（1.8-0.8）
=2.4*1
=2.4
二
=3.7*8.7+6.2*8.7+0.1*8.7
=（3.7+6.2+0.1）*8.7=
10*8.7
=87
三
=4.5*（6.5除以1.3）
=4.5*0.5
=2.25
四
=4.6除以0.4除以2.3
=4.6除以2.3除以0.4
=2除以0.4
=5
五
=3.6除以（8*0.6）*8
=3.6*0.6*8除以8
=6*1
=6
六
=6.4除以8+3.2除以8
=0.8+0.4
=1.2
七 题有错误！！
应该是63.2乘0.1加6.32乘9
是不是漏掉了个6
=6.32*10*0.1+6.32*9
=6.32*1+6.32*9
=6.32*（1+9）
=6.32*10
=63.2
要是没错就这样做
3.2乘0.1加6.32乘9 =0.32+6.32*9
=0.32+6-6+6.32*9
=6.32-6+6.32*9
=6.32*1-6+6.32*9
=6.32*(1+9)-6
=6.32*10-6
=63.2-6
=57.2
八
=11.26-（8.73-2.73）
=11.26-6
=5.26

Answer 4

2.4*1.8-4.8*0.4=2.4(1.8-2*0.4)=2.4*1=2.4
3.7*8.7+6.2*8.7+0.87=8.7*7+8.7*6+8.7*0.1=8.7(3.7+6.2+0.1)=8.7*10=87
4.2*6.5/1.3=4.2*(1.3*5)/1.3=4.2*5=21
4.6/(0.4*2.3)=2*2.3/(0.4*2.3)=2/0.4=5
3.6/4.8*0.8=3.6/(6*0.8)*0.8=3.6/6=0.6
(6.4+3.2)/8=(8*0.8+8*0.4)/8=8(0.8+0.4)/8=1.2
11.26-8.73+2.73=11.26-(8.73-2.73)=11.26-6=5.26
倒数第二题一时还想不到~

Answer 5

2.4*1.8-4.8*0.4
=2.4*1.8-2.4*2*0.4
=2.4*(1.8-0.8)
=2.4
3.7*8.7+6.2*8.7+0.87
=0.87*(37+62+1)
=87
4.2*6.5/1.3
=4.2*(6.5/1.3)
=21
4.6/(0.4*2.3)
=4.6/2.3/0.4
=5
3.6/4.8*0.8
=3.6*(0.8/4.8)
=0.6
(6.4+3.2)/8
=6.4/8+3.2/8
=1.2
3.2*0.1+6.32*9
=3.2*0.1+6*9+0.32*9
=3.2*(0.1+0.9)+6*9
=57.32
11.26-8.73+2.73
=11.26-(8.73-2.73)
=11.26-6
=5.26