8分之1减7分之5加6.875减7分之2简便计算?

2024-11-16 09:22:54
推荐回答(3个)
回答1:

1/8-5/7+6.875-2/7=1/8+6.875-(5/7+2/7)=1/8十6.875-1=0.125+6.875-1=7-1=6

回答2:

1/8-5/7+6.875-2/7
=(0.125+6.875)-(5/7+2/7)
=7-1
=6

回答3:

1/8-5/7+6.875-2/7
=(1/8+6.875)-(5/7+2/7)
=(0.125+6.875)-(5+2)/7
=7-1
=6