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Calendar Worksheet for Maths Olympiad

Maths Olympiad topic 12: Calendar puzzles · Set 19 · 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 11 July is a Wednesday, what day of the week is 23 July? (a) Wednesday (b) Tuesday (c) Sunday (d) Monday
  2. 2.If 13 September is a Wednesday, what day of the week is 18 October? (a) Tuesday (b) Thursday (c) Friday (d) Wednesday
  3. 3.If 11 January is a Saturday, what day of the week is 22 January? (a) Friday (b) Tuesday (c) Thursday (d) Wednesday
  4. 4.If 15 March is a Monday, what day of the week is 12 April? (a) Sunday (b) Monday (c) Wednesday (d) Tuesday
  5. 5.Today is Sunday. What day of the week will it be after 10 days? (a) Thursday (b) Wednesday (c) Friday (d) Tuesday
  6. 6.If 15 August is a Wednesday, what day of the week is 27 August? (a) Tuesday (b) Monday (c) Wednesday (d) Sunday
  7. 7.If 5 July is a Monday, what day of the week is 16 July? (a) Sunday (b) Saturday (c) Friday (d) Thursday
  8. 8.If 27 January is a Monday, what day of the week is 1 February? (a) Sunday (b) Monday (c) Friday (d) Saturday
  9. 9.If 15 December is a Wednesday, what day of the week is 27 December? (a) Wednesday (b) Monday (c) Sunday (d) Tuesday
  10. 10.If 18 June is a Monday, what day of the week is 19 July? (a) Wednesday (b) Thursday (c) Saturday (d) Friday
  11. 11.Today is Friday. What day of the week will it be after 91 days? (a) Saturday (b) Friday (c) Sunday (d) Thursday
  12. 12.If 7 October is a Wednesday, what day of the week is 15 October? (a) Friday (b) Wednesday (c) Saturday (d) Thursday
  13. 13.If 26 October is a Saturday, what day of the week is 1 November? (a) Thursday (b) Friday (c) Saturday (d) Sunday
  14. 14.If 20 May is a Thursday, what day of the week is 8 June? (a) Thursday (b) Tuesday (c) Monday (d) Wednesday
  15. 15.Today is Thursday. What day of the week will it be after 70 days? (a) Wednesday (b) Friday (c) Saturday (d) Thursday
  16. 16.If 12 October is a Friday, what day of the week is 28 October? (a) Monday (b) Saturday (c) Sunday (d) Tuesday
  17. 17.If 30 May is a Tuesday, what day of the week is 17 June? (a) Friday (b) Sunday (c) Monday (d) Saturday
  18. 18.Today is Saturday. What day of the week will it be after 64 days? (a) Sunday (b) Saturday (c) Tuesday (d) Monday
  19. 19.If 7 March is a Friday, what day of the week is 20 March? (a) Thursday (b) Wednesday (c) Saturday (d) Friday
  20. 20.If 16 July is a Wednesday, what day of the week is 11 August? (a) Wednesday (b) Tuesday (c) Sunday (d) Monday
  21. 21.Today is Thursday. What day of the week will it be after 83 days? (a) Thursday (b) Wednesday (c) Friday (d) Tuesday
  22. 22.If 7 March is a Saturday, what day of the week is 23 March? (a) Tuesday (b) Monday (c) Wednesday (d) Sunday
  23. 23.Today is Tuesday. What day of the week will it be after 16 days? (a) Saturday (b) Wednesday (c) Friday (d) Thursday
  24. 24.If 10 November is a Thursday, what day of the week is 5 December? (a) Sunday (b) Tuesday (c) Monday (d) Wednesday
  25. 25.If 7 March is a Friday, what day of the week is 17 March? (a) Sunday (b) Monday (c) Wednesday (d) Tuesday
  26. 26.If 11 June is a Saturday, what day of the week is 3 July? (a) Saturday (b) Sunday (c) Tuesday (d) Monday
  27. 27.If 8 December is a Tuesday, what day of the week is 17 December? (a) Saturday (b) Wednesday (c) Thursday (d) Friday
  28. 28.Today is Saturday. What day of the week will it be after 53 days? (a) Thursday (b) Tuesday (c) Friday (d) Wednesday
  29. 29.If 10 August is a Sunday, what day of the week is 20 August? (a) Friday (b) Wednesday (c) Thursday (d) Tuesday
  30. 30.If 14 May is a Tuesday, what day of the week is 22 May? (a) Tuesday (b) Thursday (c) Friday (d) Wednesday
  31. 31.If 5 July is a Saturday, what day of the week is 21 July? (a) Sunday (b) Monday (c) Wednesday (d) Tuesday
  32. 32.If 12 July is a Wednesday, what day of the week is 22 July? (a) Saturday (b) Sunday (c) Monday (d) Friday
  33. 33.Today is Tuesday. What day of the week will it be after 59 days? (a) Sunday (b) Saturday (c) Thursday (d) Friday
  34. 34.Today is Monday. What day of the week will it be after 98 days? (a) Wednesday (b) Tuesday (c) Sunday (d) Monday
  35. 35.Today is Sunday. What day of the week will it be after 78 days? (a) Wednesday (b) Sunday (c) Monday (d) Tuesday
  36. 36.If 2 May is a Wednesday, what day of the week is 11 May? (a) Saturday (b) Thursday (c) Sunday (d) Friday
  37. 37.If 11 March is a Monday, what day of the week is 10 April? (a) Wednesday (b) Thursday (c) Tuesday (d) Friday
  38. 38.Today is Wednesday. What day of the week will it be after 69 days? (a) Monday (b) Thursday (c) Wednesday (d) Tuesday
  39. 39.If 30 April is a Tuesday, what day of the week is 13 May? (a) Sunday (b) Wednesday (c) Tuesday (d) Monday
  40. 40.If 14 January is a Wednesday, what day of the week is 22 January? (a) Wednesday (b) Friday (c) Thursday (d) Saturday

Answer key

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

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