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The 22nd (20 1 1 year) Hope Cup National Mathematics Invitational Tournament Training Question Junior Middle School Grade 38-80 Answer.
38. Root number 2

39. The radical sign of-5 is 15.

40.3

4 1.3

42. Seven thirds

43.2 or 4

44. Four o'clock 1

45.20 1 1

46.234

47.6 1 at 8.

48.36

49. 1

50.20 10

5 1.a≤-2: 15

52.2 or 6

53.-2