1.6乘以7.5乘以1.25用简便方法计算脱式计算
问题描述:
1.6乘以7.5乘以1.25用简便方法计算脱式计算
答
=(0.2×8)×7.5×1.25
=(0.2×7.5)×(8×1.25)
=1.5×10
=15