五分之四加八分之三减四分之一的差简便计算

2024-10-31 01:26:13
推荐回答(3个)
回答(1):

那就是
=4/5+(3/8-2/8)
=4/5+1/8
=32/40+5/40
=37/40

回答(2):

(4/5)+(3/8)-(1/4)
=(4/5)+(3/8)-(2/8)
=(4/5)+(1/8)
=37/40

回答(3):

4/5+3/8-1/4
=4/5+3/8-2/8
=4/5+(3/8-2/8)
=4/5+1/8
=32/40+5/40
=37/40