有理数加减混合计算题100道【含答案】

有理数加减混合计算题100道【含答案】

有理数加减混合计算题1道【含答案】(七年级数学)有理数运算练习（一）【加减混合运算】一、有理数加法1、基础题(1)2+(-3)=-1(2)(-5)+(-8)=-13(3)6+(-4)=2(4)5+(-5)=0(5)0+(-2)=-2(6)(-10)+(-1)=-11(7)180+(-10)=170(8)(-23)+9=-14(9)(-25)+(-7)=-32(10)(-13)+5=-8(11)(-23)+0=-23(12)45+(-45)=02、基础题(1)(-8)+(-9)=-17(2)(-17)+21=4(3)(-12)+25=13(4)45+(-23)=22(5)(-45)+23=-22(6)(-29)+(-31)=-60(7)(-39)+(-45)=-84(8)(-28)+37=93、基础题(1)(-25)+34+156+(-65)=100(2)(-64)+17+(-23)+68=-2(3)(-42)+57+(-84)+(-23)=-92(4)63+72+(-96)+(-37)=2(5)(-301)+125+301+(-75)=50(6)(-52)+24+(-74)+12=-90(7)41+(-23)+(-31)=-13(8)(-26)+52+16+(-72)=-304、综合Ⅰ(1)1313/22+(-1/2)+(-1/3)+(-1/5)=95/66(2)(-5/4)+(-3/5)=-31/20(3)(-1.2)+1=-0.2(4)(-3)+(-2)=-5(5)(3/2)+(-2)=-1/2(6)(-5/6)+0.8=1/3(7)(-5)+0=-5(8)4+(-5)=-15、综合Ⅰ(1)(-1/2)+7/9+(-5/6)+9.75+(-2/3)+(-1/4)+(-1/5)=1153/180(2)3-1=2(3)(-1/3)+(-1/4)+2/5+(-1/6)+(-1/8)+(-3.5)+(-1/10)+(-1/12)+3/4+0.75+(-1/16)=-1393/240二、有理数减法6、基础题(1)9-(-5)=14(2)(-3)-1=-4(3)-8=-8(4)(-5)-0=-5(5)3-5=-2(6)3-(-5)=8(7)(-3)-5=-8(8)(-3)-(-5)=2(9)(-6)-(-6)=0(10)(-6)-6=-12综合Ⅰ删除明显有问题的段落1.-3+7+8=122.-13.(-1/3)+(2/3)-(1/3)+(5/3)=14.(5/4)+(-1)+(-7/2)=-17/45.3/5-(-3/4)+(7/2)=77/206.(3/7)+(4/5)-(9/2)-(7/5)=-461/707.3/8-(5/6)+(13/4)=83/248.-5/6-8=-46/69.(7/10)-(-5/4)-(16/15)=101/6010.-7-(-3/5)=-34/511.(2/3)-(5/4)-(1/6)=-23/1212.0(nocalculationneeded)13.(1/5)+(3/10)=1/2答案：1.-3+7+8=122.-133.(-1/3)+(2/3)-(1/3)+(5/3)=14.(5/4)+(-1)+(-7/2)=-17/45.3/5-(-3/4)+(7/2)=77/206.(3/7)+(4/5)-(9/2)-(7/5)=-461/707.3/8-(5/6)+(13/4)=83/248.-46/69.(7/10)-(-5/4)-(16/15