0.5×(3.2-0.8)÷0.15简便计算怎么做

2024-11-25 00:25:54
推荐回答(1个)
回答1:

0.5×﹙3.2-0.8﹚÷0.15
=0.5×2.4÷0.15
=0.5×2×1.2÷0.15
=1.2÷0.15
=﹙1.2×2﹚÷﹙0.15×2﹚
=2.4÷0.3
=8