1.25+0.75*5得简便计算

2025-04-26 05:58:51
推荐回答(2个)
回答1:

1.25+0.75*5=0.25*5+0.75*5=(0.25+0.75)*5=1*5=5

回答2:

1.25+0.75*5
=0.25*5+0.25*15
=0.25*(5+15)
=0.25*20
=5