Question

2.5×0.5-1.7×0.5简便算法咋算？

Answer 1

2.5×0.5-1.7×0.5
=0.5x(2.5-1.7)
=0.5x0.8
=0.4

Answer 2

2.5×0.5-1.7×0.5=0.5×(2.5-1.7)=0.5×0.8=0.4

Answer 3

原式=0.5×(2.5-1.7)=0.5×0.8=0.4

Answer 4

用乘法分配律简算
原式＝0.5×（2.5-1.7）
＝0.5×0.8
＝0.4

Answer 5

用乘法分配律简算原式＝0.5×（2.5-1.7）＝0.5×0.8＝0.4