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# 计算题复习

8824一. 计算: 1. 23-17-(-7)+(-16); 2. (-47)-31-(-51)+(-41);

3. -4.7+1.8-2.9+4.3; 4. -3+12-7+8-31-9;

5. 12-(-18)+(-7)-15; 6. -2+(-1)-(-1)-1; 3642

7. (-0.5)-(-31)+3.75-(+81); 8. 61-3.3-(-6)+4-(-3.3); 424

9. (-0.5)-(-31)+2.75-(+71); 42

10. (-83)+(-7.5)+(-214)+(+31); 772

11. 3-20?(-5)?1-1; 12. (1-1)?11532

13. (7+75-)?5; 14. 3+50?22

918618

15. -0.252?(-0.5)3+(1-1)?(-1)10; 82

16. (13-7-7)?(-7)+(-8); 481283

17.[(-1)2005-(3-1-3)?24]?22; 18. -0.52+1-?22?4-(-11)3?16

46842271; 4101?(-)-1; 5?.

3.

5(x?1)7(x?1)=-1 68 4. 5x?62?5x-36=1

5.

x1.5?3x-=2 0.30.4

6. 3(x-5)-2(3x-3)=9(2-x)

7. 2(x-2)-3(4x-1)=9(1-x) 8. 3x-3[x-(x+4)-6]=21 9. x?12x?1-=1

10. x-x?1=3-x?2

46

11. y-y?12

=1+y?25

13. x2-5x?126=1+2x?43

15. x?4x?0.2-3

0.5=1.6

17. 8x-1?0.2x=0.1x?0.020.2

0.01

19. 1

(x+1)-x?126

=1

21. 5(x+8)-5=6(2x-7) 23.

23[32(1

4x-12

)-3]-2=x

2

5

12. 3(y-7)-2[9-4(2-y)]=22

14.

0.1x?0.22x0.02-?1

0.2

=0.5

16. x-1[x-1(x-1)]=22

2

3

(x-1)

18. 18{14[12

(x+1)+3]+7}=1 20.

1

4(x-1)-3x?68

=1 22.5x?1-2x?16

=1-3?x4

12

24.3?0.2x-0.2?0.03x0.2

0.01

=0.75