1)7.2-(-5)+83+(-0.7) (2)8+(-6.45)-42+91 (3)(-20)+(+3)-(-5)-7 (4)(-8)+10+2-57 (5)5.9+8.4-(-78)+(-3.8) (6)4.8-(-69)+6.5-(-77) (7)(-8)-61-(31)+(-2.9) (8)9.3+(-7.2)-(+3)+5.2 (9)(-5)+1...
有理数的加减混合运算习题谁有100道加减混合运算习题,
1)7.2-(-5)+83+(-0.7) (2)8+(-6.45)-42+91 (3)(-20)+(+3)-(-5)-7 (4)(-8)+10+2-57 (5)5.9+8.4-(-78)+(-3.8) (6)4.8-(-69)+6.5-(-77) (7)(-8)-61-(31)+(-2.9) (8)9.3+(-7.2)-(+3)+5.2 (9)(-5)+1...