有理数混合运算题25页.doc

文档介绍：有理数的混合运算(一)-17-(+23)=.-7-9+(-13)=.-11+|12-(39-8)|=.-9-|5-(9-45)|=.-+-|--|=.-|-|+[-(-)]=-8-(2-|-+-|)=-(-|+518|)=×(-7)+5[(-2)3(-32)-(-22)]-38=.(-2)×{(-3)×[(-5)+2×(-)]}=-74-(-5+26).116.-84-(16-3)+.-+-(-).119.-+[-(7+-)].-[-(-)].+[-(-+)].134.(-3)2÷.(-)×(-4).136.(-32)÷(-2).(-1)2×5+(-1)×52-12×5+(-1×5).(-2)(-3)(-36)+(-1)20×.(-32)÷(3×2)×(-3-2).×(-2)2+(-2×3)2+(-2+3)+42×(-8)×16÷.[+-()2]÷()3×.()4÷()4×-().(-42×26+132×2)÷(-3)7×(-3).(3-9)4×23×(-)×[(-30)2-(-402)]3÷(1250)2.