有理数的混合运算习题(十道初一数学有理数乘法混合运算题)

1.(-100)x(-20)x(-5)=2000x(-5)=-10000

2.(0.7)x(负的1又五分之三）=-28/25

3.(-2)x(-1/2)x(-3)=-3

4.(-1/2)x6=-3

5.(-152)x0x(-21)=0

6.(-1/2)x(-1/3)=1/6

7.(3/10)x(-1/4)=-3/40

8.-24x(1/3)x(-7/12)=7/6

9.-0.32x(-4.58)-0.68x(-4.58)=(-4.58)x[(-0.32)+(-0.68)]=(-4.58)x(-1)=4.58

10.[(3/10)-(1/2)+(1/5)-0.1]x(-10)=(3/10)x(-10)-(1/2)x(-10)+(1/5)x(-10)-0.1x(-10)=-3+5-2+1=1