1. 10205030 2. (6)(7)(5)(9) 3. 12(18)(28)10
4. 5. () 6. (5)()7 7.
8. 9. 11.5(4.5)3 10. (
12. (36)
14567912133515451273131() 442941412172218)() 11. 915 3551921121 13. (8)(55)(0.02) 14. 185623 1
1141715. (2)(5) 16. (5.5)(3.2)(2.5)4.8 17. (36)
229612 18.
1122221. 823(4)3 22. 100(2)2(2) 23. 2(2)3(2)
1131(3)2 19. (0.12)(2)()(1.6) 20. 5(3)2(2)2 2124282
24. (240)(572
153881) 25. 104(2)2(8)(4) 152 2
1171132326. 14122 27.
23 28. 121313248164(24)5
30. 224212211232222
31. (125)17(315)17(166)17(117)
5327529. (3114)(12)(24)
32. 15379418(36)3
33. 0.25 34. 1211
1111112212346
35. (3)3(9)(2)241
37. (31)(3171)3121773722
39. 42(4)2(1)31131216324
323321331(4)2 36. 1641163
41238. (1)3(8142)17(3)3[(2)55] 40. 14112232(3)
4
21171241. 131(2)3 42. (0.125)(3)(2.75)(5)
233
43. 115(5)21(5)1277227
45. 33(11)(1461)(1)2n112(n为正整数) 47. 518{8(12)412524(12)2}
4844. 321(5)2(3)240(4)1354 46. 522310.832242
48. (1)3(81)4(3)3[(2)52175] 5
49. 422(3)2614(2)2(2)332(3)3
50. (3)3(5)20.52(3)3174(3644)342(34)318
51. 125(15)(21320015)(64)(4)33(1)
52. (125)17(315)17(166)17(117)
6
53. (5)(36)1512531324778864
54. (2)3(1)22210112213333333
参考答案: 1.-10 2. 13 3. 24
4.5 5.665 10.145
11.14919 12.-5 13.445 14.25
19.310 20.-31 21.8 22.21 23.-13 28.98
29.12 30.-104 31.21 32.-20 37.4
38.2
39.234 40.16 41.316 46.1715 47.119
48.2
49.11312 50.64
6.16 15.-5
24.206 33.0
42.0 51.25897.-1
16.-11 25.-11 34.2343.21252.21 8.21217.13
26.-2 35.15
44.0 53.558 9.-10
18.-4 27.14
36.623
45.712 54.9989 7
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