Question

7.9乘1.5加15乘0.21怎样简算

Answer 1

7.9乘1.5加15乘0.21怎样简算

7.9乘1
.5加15乘0.21怎样简算
7.9乘1.5加1
5乘0.21怎样简算
7.9乘1.5加15乘0.21怎
样简算

78乘0.21加7.9乘7.8怎样简算

解
原式
=78×0.21+0.79×78
=78×(0.21+0.79)
=78×1
=78

7.9乘14.5加2.1乘14.5减15.8怎样简算

7.9×14.5+2.1×14.5-15.8
=（7.9+2.1）×14.5-15.8
=10×14.5-15.8
=145-15.8
=129.2

8.5乘7.9加0.5乘7.9加7.9简算

8.5乘7.9加0.5乘7.9加7.9
=（8.5+0.5+1）x7.9
=10x7.9
=79

222乘0.37加666乘0.21怎么简算

222×0.37+666×0.21
=222×0.37+222×0.63
=222×（0.37+0.63）
=222×1
=222

335乘15加335乘38加47怎样简算

335*15+335*38+47
335*(15+35)+335*3+47
16750+1005+47
17755+47
17802

18乘7.9加0.18乘210怎么简算

18×7.9+0.18×210
=18×7.9+18×2.1
=18×(7.9+2.1)
=18×10
=180

15乘以1.5乘4怎么简算

15乘以1.5乘4怎么简算
=15x4x1.5
=60x1.5
=90

(24乘15加155)除26怎样简算

(24乘15加155)除26
=(360+155)÷26
=515÷26
=19.8076…

0.36乘1.5减0.45怎样简算就怎样算

=9*（0.2*1.5）*（0.2*0.45）=9*0.3*0.09=0.081