87×86⼀88的简便算法?

2025-04-06 05:03:16
推荐回答(3个)
回答1:

简便计算
87×86/88
=(88-1)x86/88
=88x86/88-86/88
=86-43/44
=85又1/44

回答2:

=(88-1)×86/88
=88×86/88-1x86/88
=86-86/88
=85又43/44

回答3:

87乘(88/1+1/87)