17.6+2.4÷2.5×4(简便计算)

2024-11-26 17:28:43
推荐回答(1个)
回答1:

17.6+2.4÷2.5×4
=17.6+(2.5-0.1)*4/2.5
=17.6+4(1-1/25)
=17.6+4-4*0.04
=21.44