Question

三点二乘四点五加三十二乘零点五五减零点三二 怎么用简便方法计算

Answer 1

3.2x4.5+32x0.55-0.32
=3.2x4.5+3.2x5.5-0.32
=(4.5+5.5)x3.2-0.32
=10x3.2-0.32
=32-0.32
=31.68