2015年七年级实数运算百题竞赛(1)

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嘉善四中

1. (–

2.5)+(–52.6)=_______

2. (–8)+(+21)+(–12)= _______

3. (+30)+(–17.5)+(–20)+(+17.5)= _______

4. (–2.75)+(–4

41)+(–283) +8

5

=_______ 5. (– 243)+ 143 + 131 + (– 53

1

)=_______

6. (– 1.8)+ 0.2 + ( – 1.5 )= _______

7. (–23)–(–27)–27=_______ 8. (–732)+(+421)–2

1

=_______

9. (–1)+(+2)–(–3)–(–4)=_______

10. (–331)–(+21)+(+443

)=_______

11. (–21)–(+31)+(+41

)=_______

12. (–321)–(+531)–(+75

1

)=_______

13. (+6)–(+4)+7–(–2)=_______

14. (–21)+(–31)–(+4

1

)=_______

15. 0×(–1)×(–2)×(–3)=_______

16. –173×53

=_______

17. (74–91+21

2)×(– 63)=_______

18. –150×(–81

)–25×0.125=_______

19. (–72)×(+131

)=_______

20. (+37

1

)×(371–731)×227 ×2221=_______

21. 321×(–75)–(–75)×221

=_______

22. (41+61–12

1

)×(–48)=_______

23. (–232 )÷(–197

)= _______

24.247

6

÷(–6)= _______

25. (–1.4+1514 )÷(–30

7

) =_______

26. (–0.75) ÷45

÷ (–0.3)= _______

27. 7÷(–23

1

)=_______

28. (31–43)÷(–12

1

)= _______

29. –1÷(–81)–3÷(–2

1

)=_______

30. –601÷(31+41–5

1

)=_______

31. -(-1)÷(-8

5

)= _______

32. -261÷(-12

5

)=_______

33. 5÷(-6

1

)×(-6)=_______

34. 2-×23-()2

32⨯-=_______

35. -54×241÷(-421)×92

=_______

36. 2

1

5

-×(2131-)×0.6÷(-1.75)=_______

37. (–21

)3 =_______

38. (–3

5

)2=_______

39. (–7)3÷(–7)4

= _______ 40. (7.2×109)÷(–9×103)=_______

41. 53+(2–7)3–050–(–1)51= _______

42. (–22–32–42)÷(–5)2=_______

43. –32×(–95 )×(–3

2 )2×(–1)11–(–1)7

=_______

44. 0–23÷(–4)3–8

1

=_______

45. 36×(21–3

1

)2=_______

46. 16÷(–2)3–(–81

)×(–4)=_______

47.3+50÷22×(–5

1

)–1=_______

48. 43–(–3)2×(31–9

1

)=_______

49. (–3)2–(–24)×0.25÷(–2

1

)=_______

50.–14–[1–(1–0.5×3

1

)]×[2–(–3)2]= _______

51.2

2

2

172(3)(6)3⎛⎫

-+⨯-+-÷- ⎪⎝⎭

=_______

52. 421

1(10.5)[2(3)]3

---⨯⨯--=_______

53. ________195.322.105.4921=+--+- 54. -27+2×()2

3-+(-6)÷()2

31-=_______

55. 22213151[4(4)]1417⎛⎫

---⨯-- ⎪⎝⎭

= _______

56. 3

2

3

2

3

3351914321251943252⎛

⎫⎛⎫⎛⎫⎛⎫⎛⎫-⨯--⨯⨯-+⨯- ⎪ ⎪ ⎪ ⎪ ⎪

⎝⎭⎝⎭

⎝⎭⎝⎭⎝⎭=_______ 57. 2008

2009

7887⎛⎫

⎛⎫⨯- ⎪

⎪⎝⎭

⎝⎭

=_______

学校: 班级: 姓名: 学号: 座

嘉善四中七年级数学实数运算百题竞赛(2015.10)

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