Question

0.25×1.8×1.4怎么简便计算？

Answer 1

简便计算过程如下：

1、提取原式：0.25×1.8×1.4

2、计算过程：

      =0.25×（1+0.8）×1.4

      =（0.25×1+0.25×0.8）×1.4

      = ( 0.25+0.2 ) ×1.4

      = 0.45×1.4

      =0.5×1.4-0.05×1.4

      =0.7-0.07

      =0.7-0.1+0.03

      =0.63

3、计算结果：0.63

Answer 2

0.25×1.8×1.4的简便计算是:
1/4×2×0.9×2×0.7
=（1/4×2×2）×（0.9×0.7）
=1×0.63=0.63

Answer 3

0.25×1.8×1.4=0.45×1.4=0.63

Answer 4

（0.25*1+0.25*0.4）*1.8
=（0.25+0.1）*1.8
=0.35*1.8
=0.35*1+0.35*0.8
=0.35+0.28
=0.63
过程有点长，但是这样能口算出来~

Answer 5

0.25x1.8x1.4
=0.25x1.4x1.8
=0.35x1.8
=0.63