2除0点25一O点25除2能巧算就巧算

2024-11-27 03:56:10
推荐回答(3个)
回答1:


热的

回答2:

2÷0.25-0.25÷2
=2X4-(1/4)÷2
=8-1/8
=7又8分之7

回答3:

12.5×﹙0.4-0.08﹚×2.5,把12.5和2.5同时分配进去=12.5×0.4×2.5-12.5×0.08×2.5 =12.5×﹙0.4×2.5﹚-﹙12.5×0.08﹚×2.5 =12.5-2.5 =10