Question

15.3+2.71-3.19怎样简便怎样算

Answer 1

15.3+2.71-3.19怎样简便怎样算

15.3+2.71-3.19
=18.01-4+0.81
=14.82

10-4.53 +2.46-2.71怎样算最简便

10-4.53 +2.46-2.71怎样算最简便
10-4.53 +2.46-2.71
=10+2.46-（4.53+2.71）
=12.46-7.24
=5.22

808x125和15.3+0.86+0.14+4.7怎样简便运算

808x125
=（800+8）x125
=800x125+8x125
=100000+1000
=101000
15.3+0.86+0.14+4.7
=15.3+4.7+0.86+0.14
=20+1
=21

3084 286怎样简便怎样算?

没有运算符号我知道是啥法呀？

187*54怎样简便怎样算

187×54=10098
怎样算都不简便。但可以这样吧：
187×（60-6）
=187×60-187×6
=11220-1122
=10098

怎样简便怎样算275×（78

275×（78-50）
=275×28
=7700；

975×40怎样简便怎样算

(1000-25)×40
=1000×40-25×40
=40000-1000
=39000

3789一499怎样简便怎样算

3789-499
=3790-1 -(500-1)
=3790-500
=3290

3.20.36+3.240.64怎样简便怎样算

3.24x0.36+3.24x0.64
=3.24x（0.36+0.64）
=3.24x1
=3.24

124.35-35.24怎样简便怎样算？

解：124.35-35.24
=（89+35.35）-35.24
=89+0.01
=89.01