二十四乘五分之二加七十五除以二点五加零点四的简便

二十四乘五分之二加七十五除以二点五加零点四的简便
2024-12-23 06:32:40
推荐回答(2个)
回答1:

=24x0.4+75x0.4+0.4
=(24+75+1)x0.4
=100x0.4
=40

回答2:

24*2/5+75/2.5+0.4
=24*0.4+75*0.4+0.4
=(24+75+1)*0.4
=100*0.4
=40