Question

0.28×1.6−0.6×0.8用简便方法怎么算

Answer 1

0.28×1.6−0.6×0.8
=0.28×2×0.8−0.6×0.8
=0.56×0.8−0.6×0.8
=（0.56−0.6）×0.8
=-0.04×0.8
=-0.032

Answer 2

解:可以提取0.8，然后按四则运算法则进行计算。计算过程
0.28ⅹ1.6-0.6ⅹ0.8
=0.8ⅹ(0.56-0.6)
=0.8ⅹ(-0.04)
=-0.032。