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)