0.45(10-(0.2+6.37÷0.7))×0.5巧算

2025-04-08 08:35:36
推荐回答(1个)
回答1:

0.45+(10-(0.2+9.1))×0.5
=0.45+(10-9.3)×0.5
=0.45+0.7×0.5
=0.45+0.35
=0.8