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Calendar Worksheet for Maths Olympiad

Maths Olympiad topic 12: Calendar puzzles · Set 235 · 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.If 18 September is a Monday, what day of the week is 1 October? (a) Tuesday (b) Saturday (c) Monday (d) Sunday
  2. 2.If 8 October is a Tuesday, what day of the week is 20 October? (a) Saturday (b) Monday (c) Tuesday (d) Sunday
  3. 3.Today is Monday. What day of the week will it be after 23 days? (a) Thursday (b) Wednesday (c) Tuesday (d) Friday
  4. 4.Today is Monday. What day of the week will it be after 11 days? (a) Sunday (b) Saturday (c) Friday (d) Thursday
  5. 5.If 6 January is a Monday, what day of the week is 17 January? (a) Friday (b) Thursday (c) Sunday (d) Saturday
  6. 6.Today is Tuesday. What day of the week will it be after 31 days? (a) Saturday (b) Friday (c) Sunday (d) Thursday
  7. 7.If 30 October is a Friday, what day of the week is 3 November? (a) Tuesday (b) Monday (c) Thursday (d) Wednesday
  8. 8.If 1 August is a Wednesday, what day of the week is 10 August? (a) Sunday (b) Friday (c) Thursday (d) Saturday
  9. 9.If 1 January is a Friday, what day of the week is 15 January? (a) Saturday (b) Sunday (c) Thursday (d) Friday
  10. 10.If 10 May is a Tuesday, what day of the week is 3 June? (a) Thursday (b) Friday (c) Saturday (d) Sunday
  11. 11.If 21 May is a Saturday, what day of the week is 1 June? (a) Tuesday (b) Wednesday (c) Thursday (d) Friday
  12. 12.If 15 March is a Tuesday, what day of the week is 11 April? (a) Sunday (b) Wednesday (c) Tuesday (d) Monday
  13. 13.If 8 October is a Monday, what day of the week is 17 October? (a) Thursday (b) Tuesday (c) Friday (d) Wednesday
  14. 14.If 22 March is a Thursday, what day of the week is 16 April? (a) Sunday (b) Tuesday (c) Monday (d) Wednesday
  15. 15.Today is Sunday. What day of the week will it be after 100 days? (a) Thursday (b) Monday (c) Tuesday (d) Wednesday
  16. 16.If 2 October is a Wednesday, what day of the week is 18 October? (a) Friday (b) Saturday (c) Thursday (d) Sunday
  17. 17.If 4 December is a Sunday, what day of the week is 12 December? (a) Wednesday (b) Sunday (c) Monday (d) Tuesday
  18. 18.If 15 August is a Tuesday, what day of the week is 31 August? (a) Wednesday (b) Thursday (c) Saturday (d) Friday
  19. 19.Today is Wednesday. What day of the week will it be after 54 days? (a) Tuesday (b) Wednesday (c) Monday (d) Sunday
  20. 20.Today is Monday. What day of the week will it be after 14 days? (a) Tuesday (b) Monday (c) Wednesday (d) Sunday
  21. 21.If 8 December is a Sunday, what day of the week is 23 December? (a) Sunday (b) Monday (c) Wednesday (d) Tuesday
  22. 22.Today is Tuesday. What day of the week will it be after 74 days? (a) Saturday (b) Sunday (c) Monday (d) Friday
  23. 23.If 25 October is a Friday, what day of the week is 7 November? (a) Thursday (b) Friday (c) Saturday (d) Wednesday
  24. 24.If 12 July is a Saturday, what day of the week is 7 August? (a) Thursday (b) Friday (c) Wednesday (d) Saturday
  25. 25.Today is Tuesday. What day of the week will it be after 15 days? (a) Tuesday (b) Thursday (c) Friday (d) Wednesday
  26. 26.If 10 August is a Tuesday, what day of the week is 19 August? (a) Wednesday (b) Friday (c) Thursday (d) Saturday
  27. 27.Today is Tuesday. What day of the week will it be after 82 days? (a) Monday (b) Tuesday (c) Saturday (d) Sunday
  28. 28.Today is Monday. What day of the week will it be after 74 days? (a) Saturday (b) Friday (c) Sunday (d) Thursday
  29. 29.If 2 August is a Tuesday, what day of the week is 16 August? (a) Thursday (b) Wednesday (c) Tuesday (d) Monday
  30. 30.Today is Sunday. What day of the week will it be after 30 days? (a) Thursday (b) Wednesday (c) Monday (d) Tuesday
  31. 31.If 2 August is a Wednesday, what day of the week is 12 August? (a) Sunday (b) Monday (c) Friday (d) Saturday
  32. 32.If 3 October is a Monday, what day of the week is 11 October? (a) Wednesday (b) Thursday (c) Tuesday (d) Monday
  33. 33.If 28 July is a Saturday, what day of the week is 19 August? (a) Monday (b) Tuesday (c) Sunday (d) Saturday
  34. 34.If 15 April is a Sunday, what day of the week is 4 May? (a) Sunday (b) Thursday (c) Saturday (d) Friday
  35. 35.If 9 December is a Friday, what day of the week is 18 December? (a) Saturday (b) Sunday (c) Tuesday (d) Monday
  36. 36.Today is Tuesday. What day of the week will it be after 58 days? (a) Friday (b) Wednesday (c) Thursday (d) Saturday
  37. 37.Today is Saturday. What day of the week will it be after 42 days? (a) Monday (b) Friday (c) Saturday (d) Sunday
  38. 38.If 3 July is a Sunday, what day of the week is 11 July? (a) Tuesday (b) Wednesday (c) Monday (d) Sunday
  39. 39.If 19 September is a Sunday, what day of the week is 2 October? (a) Friday (b) Saturday (c) Sunday (d) Monday
  40. 40.Today is Wednesday. What day of the week will it be after 15 days? (a) Wednesday (b) Saturday (c) Friday (d) Thursday

Answer key

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

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