有理数四则混合运算练习题.doc

文档介绍：有理数四则混合运算练****题
1. 36x(3/4-5/9) 2. (3/8+7/12)x24
3. 3/17x5+3/17x12 4. 8/13x24-8/13x11
5. 72x(1/4-2/3-5/6) 6. (3/10-1/4+4/5)x(-20)
7. (-56)x(4/7+1/14-3/8) 8. (7/9-5/6+3/4-7/18)x54
9. 8/17x(-7/9)+8/17x(-2/9) 10. 16/9x28+16/9x12-16/9x4
11. 5x(-6)-(-4)^2~(-8) 12. 9/4x(-6/7)~(1/2-2)
13. (-16-50+17/5)~(-2) 14.(-6)x8-(-2)^3-(-4)^2x5
15. (-1/2)^2+1/2x(2/3-{2/3-2}) 16. -3/2x[-3^2x(-2/3)^2-2]
17.-1^4-(1-)x1/3x[2-(-3)^2] 18.-5^2-[-4+(1-)~(-2)]
19. -8-3x(-1)^3-(-1)^4 20. 17-8~(-2)+4x(-3)