Question

0.125+(+3又1/4)+(-3又1/8)+(+7/8)+(-0.125)的简便算法

Answer 1

0.125+(+3又1/4)+(-3又1/8)+(+7/8)+(-0.125)
=0.125-0.125+(+3又1/4)+（-3又1/8+7/8)
=3又1/4-2又1/4
=1

Answer 2

0.125+(+3又1/4)+(-3又1/8)+(+7/8)+(-0.125)
=0.125+(-0.125)+3+1/4-3-1/8+7/8
=1

追问

最后一个是（-0.25），不是(-0.125)

追答

0.125+(+3又1/4)+(-3又1/8)+(+7/8)+(-0.25)
=1/8+(-2/8)+3+1/4-3-1/8+7/8
=9/8