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Calendar Worksheet for Maths Olympiad

Maths Olympiad topic 12: Calendar puzzles · Set 911 · 40 questions
TalentJR

How to solve it (Throw away the weeks): Count the days between the two dates (use the month lengths: 30 or 31, February 28 in an ordinary year). Divide by 7: whole weeks do not change the day; the remainder does. Count the remainder on from the starting day.

NameDateTime takenScore ___ / 40
  1. 1.Today is Saturday. What day of the week will it be after 81 days? (a) Thursday (b) Tuesday (c) Wednesday (d) Friday
  2. 2.Today is Friday. What day of the week will it be after 100 days? (a) Sunday (b) Tuesday (c) Saturday (d) Monday
  3. 3.If 10 December is a Sunday, what day of the week is 23 December? (a) Monday (b) Sunday (c) Friday (d) Saturday
  4. 4.If 28 July is a Wednesday, what day of the week is 6 August? (a) Saturday (b) Thursday (c) Sunday (d) Friday
  5. 5.If 11 December is a Friday, what day of the week is 22 December? (a) Thursday (b) Tuesday (c) Wednesday (d) Monday
  6. 6.If 2 August is a Saturday, what day of the week is 13 August? (a) Friday (b) Thursday (c) Tuesday (d) Wednesday
  7. 7.If 6 October is a Monday, what day of the week is 18 October? (a) Friday (b) Monday (c) Sunday (d) Saturday
  8. 8.Today is Saturday. What day of the week will it be after 48 days? (a) Thursday (b) Friday (c) Sunday (d) Saturday
  9. 9.Today is Friday. What day of the week will it be after 84 days? (a) Sunday (b) Thursday (c) Saturday (d) Friday
  10. 10.Today is Thursday. What day of the week will it be after 75 days? (a) Tuesday (b) Wednesday (c) Thursday (d) Monday
  11. 11.If 3 August is a Saturday, what day of the week is 13 August? (a) Wednesday (b) Thursday (c) Monday (d) Tuesday
  12. 12.Today is Thursday. What day of the week will it be after 37 days? (a) Monday (b) Friday (c) Saturday (d) Sunday
  13. 13.Today is Sunday. What day of the week will it be after 83 days? (a) Friday (b) Sunday (c) Saturday (d) Monday
  14. 14.If 6 May is a Wednesday, what day of the week is 19 May? (a) Wednesday (b) Thursday (c) Tuesday (d) Monday
  15. 15.Today is Thursday. What day of the week will it be after 32 days? (a) Wednesday (b) Tuesday (c) Sunday (d) Monday
  16. 16.If 23 November is a Saturday, what day of the week is 11 December? (a) Wednesday (b) Thursday (c) Friday (d) Tuesday
  17. 17.Today is Tuesday. What day of the week will it be after 47 days? (a) Saturday (b) Tuesday (c) Monday (d) Sunday
  18. 18.Today is Tuesday. What day of the week will it be after 14 days? (a) Thursday (b) Wednesday (c) Tuesday (d) Monday
  19. 19.Today is Tuesday. What day of the week will it be after 19 days? (a) Tuesday (b) Saturday (c) Monday (d) Sunday
  20. 20.If 9 August is a Tuesday, what day of the week is 17 August? (a) Friday (b) Tuesday (c) Wednesday (d) Thursday
  21. 21.Today is Sunday. What day of the week will it be after 61 days? (a) Sunday (b) Friday (c) Thursday (d) Saturday
  22. 22.If 6 August is a Monday, what day of the week is 22 August? (a) Thursday (b) Friday (c) Tuesday (d) Wednesday
  23. 23.If 1 December is a Wednesday, what day of the week is 9 December? (a) Thursday (b) Friday (c) Wednesday (d) Saturday
  24. 24.If 12 May is a Tuesday, what day of the week is 27 May? (a) Wednesday (b) Friday (c) Tuesday (d) Thursday
  25. 25.If 25 January is a Thursday, what day of the week is 13 February? (a) Tuesday (b) Wednesday (c) Thursday (d) Monday
  26. 26.If 14 October is a Monday, what day of the week is 27 October? (a) Monday (b) Sunday (c) Saturday (d) Tuesday
  27. 27.If 12 November is a Thursday, what day of the week is 10 December? (a) Saturday (b) Friday (c) Wednesday (d) Thursday
  28. 28.Today is Monday. What day of the week will it be after 69 days? (a) Sunday (b) Tuesday (c) Saturday (d) Monday
  29. 29.Today is Sunday. What day of the week will it be after 92 days? (a) Sunday (b) Monday (c) Wednesday (d) Tuesday
  30. 30.Today is Monday. What day of the week will it be after 27 days? (a) Monday (b) Tuesday (c) Saturday (d) Sunday
  31. 31.Today is Sunday. What day of the week will it be after 19 days? (a) Thursday (b) Sunday (c) Friday (d) Saturday
  32. 32.Today is Sunday. What day of the week will it be after 25 days? (a) Saturday (b) Thursday (c) Wednesday (d) Friday
  33. 33.If 23 April is a Sunday, what day of the week is 3 May? (a) Thursday (b) Friday (c) Wednesday (d) Tuesday
  34. 34.If 9 March is a Friday, what day of the week is 17 March? (a) Saturday (b) Friday (c) Sunday (d) Monday
  35. 35.Today is Wednesday. What day of the week will it be after 64 days? (a) Thursday (b) Wednesday (c) Saturday (d) Friday
  36. 36.If 28 October is a Wednesday, what day of the week is 13 November? (a) Saturday (b) Sunday (c) Thursday (d) Friday
  37. 37.If 7 March is a Wednesday, what day of the week is 18 March? (a) Saturday (b) Monday (c) Tuesday (d) Sunday
  38. 38.If 21 January is a Sunday, what day of the week is 11 February? (a) Saturday (b) Tuesday (c) Monday (d) Sunday
  39. 39.Today is Monday. What day of the week will it be after 16 days? (a) Thursday (b) Friday (c) Tuesday (d) Wednesday
  40. 40.Today is Tuesday. What day of the week will it be after 77 days? (a) Wednesday (b) Tuesday (c) Thursday (d) Monday

Answer key

  1. Wednesday
  2. Sunday
  3. Saturday
  4. Friday
  5. Tuesday
  6. Wednesday
  7. Saturday
  8. Friday
  9. Friday
  10. Tuesday
  11. Tuesday
  12. Saturday
  13. Saturday
  14. Tuesday
  15. Monday
  16. Wednesday
  17. Sunday
  18. Tuesday
  19. Sunday
  20. Wednesday
  21. Friday
  22. Wednesday
  23. Thursday
  24. Wednesday
  25. Tuesday
  26. Sunday
  27. Thursday
  28. Sunday
  29. Monday
  30. Sunday
  31. Friday
  32. Thursday
  33. Wednesday
  34. Saturday
  35. Thursday
  36. Friday
  37. Sunday
  38. Sunday
  39. Wednesday
  40. Tuesday

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