Question

0.32×4-1.2×0.4简便运算过程？

Answer 1

解：0.32×4-1.2×0.4
=0.32×4-1.2×（4×0.1）
=0.32×4-1.2×4×0.1
=4×（0.32-1.2×0.1）
=4×（0.32-0.12）
=4×0.2
=0.8

Answer 2

简便运算的过程就是运用乘法分配律进行计算。先把0.4化成4，也就是0.12×4。0.32×4-0.12×4就=4×括号里0.32-0.12括起来=4×2=8

Answer 3

简便运算如下所示，0.32×4-1.2×0.4＝3.2×0.4-1.2×0.4＝（3.2-1.2）×0.4＝2×0.4＝0.8。

Answer 4

0.32x4-1.2x0.4
=（3.2-1.2）x0.4
=2Ⅹ0.4
=0.8

Answer 5

0.32*4-1.2*0.4
=0.32*4-0.12*4
=4*（0.32-0.12）
=4*0.2
=0.8