3.14臿7뻿27.2_31.4臿7뻿20.15的简便计算

2025-03-01 18:37:24
推荐回答(1个)
回答1:

简便计算
314×0.043+3.14×7.2-31.4×0.15
=31.4×0.43+31.4×0.72-31.4×0.15
=31.4×(0.43+0.72-0.15)
=31.4×1
=31.4