14.2*1.25+1.25*0.5+5.3*1.25简算
问题描述:
14.2*1.25+1.25*0.5+5.3*1.25简算
答
14.2×1.25 + 1.25×0.5 + 5.3×1.25
= 1.25×(14.2 + 0.5 + 5.3)
= 1.25×20
= 25