1.5432 1; 2. Lack of accounting; 3. Mailing ledger: 4. Letter statistics; 5. Audit accounts for others; 6. Audit accounts; 7. lucky draw; 8. The pointer of the arithmetic teacher; 9. A debt; 10. Store inventory; 1 1. Use; 12. 13. Team competition; 14. Fighting against soldiers will turn against generals; 15. Left and right flank; 16. heavy sentence; 17. light sentence; 18. Station notice; 19. Carrying the horn; 20. Stand by and be responsible; 2 1. Zhu Yuanzhang ascended the throne; 22. Marriage Law; 23. Actor recruitment system; 24. Pentagon; 25. Members; 26. Knife edge; 27. Both sides of the Taiwan Province Strait look forward to reunification; 28. Everything is fine if the ending is good; 29. The road is not curved; 30. The two villages are separated by columns, and the South Village is not as strong as the North Village; The Five Heroes in Nanzhai are not as good as a couple in Beizhai. 3 1. Improve the legal system; 32. Children's savings; 33. impermanence of gathering and dispersing; 34. inextricably linked; 35.height; 36. Talks; 37. embarrassed; 38. Keep your distance and take off at the same time; 39. Fifty cents a trip; 40. duckweed; 4 1. mutual hope; 42. Family fun; 43. Appropriate; 44. Endless; 45. exactly the same; 46. The whistle sounded; 47. The subtraction is incorrect; 48. Fishing; 49. Take the road of getting rich; 50. North; 5 1. Look up at the moon, just the eighth day; 52. erhu tuning; 53. I have been looking forward to going to the battlefield (playing two nouns in mathematics); 54. Cheng (third in mathematics); 55. A postman lifted the lid of the mailbox and counted how many letters there were. Can you guess three mathematical terms from this situation?

Second, the name of the mathematician

1. There is spring in the tiger hill; 2. Read widely.

Third, give play to other aspects

1.85 (name a movie); 2.3824 (a sports term); 3. Four plus four (one word); 4.+-× (type A political noun); 5. Compass plan eggs (enter city name); 6. Force (make a bead calculation formula); 7. How many things have risen and fallen through the ages (name three disciplines); 8. Xiangyang Village and Songqing Village play basketball. Xiangyang team is the champion of Dongfang Township, while Song Qing team is the champion of Changfeng Township. The match between the two champions was very intense and exciting. Every goal was contested and the score was even. It was not until the last minute that Xiangyang scored a penalty that the winner was decided. When someone asked about the outcome and score, Xiangyang team players said that the word "white" was more than "miscellaneous" in this game.

Answer:

1. 1. Countdown: 2. Irrational number; 3. Function; 4. Function; 5. Algebra; 6. Logarithm; 7. Logarithm; 8. Index: 9. Negative number; 10. Complex number; 1 1 .half angle; 12. Internal angle; 13. Gong * * * Angle; 14. equidistant angle; 15. Two corners; 16. Addition (riddle means "adding punishment", and "punishment" is homophonic with "law"); 17. subtraction; 18. Multiplication (riding method, taking multiplication); 19. Negative sign; 20. equal sign; 2 1. eliminated; 22. Association Law; 23. Optimization method; 24. semicircle; 25. The center of the circle; 26. Tangent point; 27. Concentric circles; 28. Concentric circles; 29. Diameter; 30. abacus; 3 1. compass; 32. Calculus; 33. indefinite integral; 34. Numerous scores; 35. Solid geometry; 36. Set theory; 37. Cybernetics; 38. Parallel; 39. One yuan twice; 40. adventitious roots; 4 1. Equality; 42.* * * circle; 43. Accurate value; 44. infinity; 45. congruence; 46. assembly; 47. mistakes; 48. Equal to ("fish" and "fish" are homophonic); 49. The trend is endless; 50. Inverse proportion (inverse method, "north" is "ratio"); 5 1. sine (borrowing method, because the first August is the first chord, "Shang" contains "positive", so it is "sine"); 52. Sine; 53. Equiangular tangent; 54. Molecules greater than, less than, and (guess by increasing loss method); 55. Issuer, function and geometry.

Second, 1. Sue; Zhang Guanghou.

Third, 1. Mid-autumn festival; 2. Women's doubles ("38" deducts "women" and "24" deducts "doubles" because twelve is a dozen); 3. Product ("four plus four" plus eight, and then "add eight" to spell "product"); 4. Separatism; 5. Taiyuan ("original" and "round" homophonic); 6. Twenty-one plus five; 7. History, algebra and geometry; 9. Ninety-nine to ninety-eight ("white" is "hundred" MINUS "one"; Miscellaneous is a combination of nine, ten and eight.

Finally, there are several points worth pointing out. First of all, we can guess the answer of this article by combining Pan's next article "Making and guessing mathematical riddles". Secondly, from this article, we can know that different riddles sometimes have the same answer. Third, the answer to the same riddle is sometimes made up of several parts, and these parts are all tied together, so you must guess all of them correctly. Fourth, the 55th riddle is a crossword puzzle.