28-(3.4+1.25×2.4)怎样简便计算?

2025-04-05 22:29:01
推荐回答(4个)
回答1:

28-(3.4+1.25×2.4)
=28-(3.4+1又1/4×2.4)
=28-(3.4+5/4×2.4)
=28-(3.4+5×0.6)
=28-(3.4+3)
=28-6.4
=21.6

回答2:

28-(3.4+1.25×2.4)
=28-(3.4+1.25×8×0.3)
=28-(3.4+10×0.3)
=28-6.4
=21.6

回答3:

原式=28-3.4-1.25*8*0.3
=24.6-3
=21.6

回答4:

24一(4.4十1.25x2.4)=多少呀?