Question

初一数学有理数加减计算题及答案

急急急

Answer 1

(1)(-8)+10+2+(-1)
=-8+10+2-1
=3
(2)25+(-12)+(-17)-(-6)
=25-12-17+6
=2
(3)(-0.8)+1.2+(-0.7)+(-2.1)
=-0.8+1.2-0.7-2.1
=-1.7
(4)5.6+(-0.9)+4.4=(-8.1)
=10+(-9)
=1
(5)5+(-6)+3+9+(-4)+(-7)
=17+(-17)
=0
(6)0+(-3.17)+(-5)+(+1.17)
=[-(3.17+50]+1.17
=-(8.17-1.17)
=-7
(8)0-(-2.17)-(+1.17)-0.17
=2.17-1.17-0.17
=0.83

给点Q币吧！

Answer 2

|-6又3/8+2又1/2|+（-8又7/8）+|-3-1/2|

解:原式=31/8+(-71/8)+7/2
=-5+7/2
=-3/2

Answer 3

是啊

Answer 4

题目呢？