脱式计算能简算的要简算2.5×1.6×1.25

Question

如题所述

Answer 1

2.5×1.6×1.25
=2.5x（1+0.6）x1.25
=（2.5+2.5x0.6）x1.25
=（2.5+1.5）x1.25
=4x1.25
=5本回答被网友采纳