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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 527 · 40 questions
TalentJR

The trick (Choose a trick): × 9 → finger trick; × 4 → double double; × 10, 100, 1000 → slide and add zeros. 37, 12345679 or 111… → magic patterns; reverse and subtract → 1089. Puzzles: find the rule, the total or the leftover days, then check your answer.

NameDateTime takenScore ___ / 40
  1. 1.The 3rd of a month is a Friday. What day is the 22nd of the same month? (a) Wednesday (b) Tuesday (c) Saturday (d) Thursday
  2. 2.I thought of a number, added 7 and then doubled it. I got 52. What was my number?
  3. 3.Odd one out: which number is NOT in the 8 times table? (a) 60 (b) 40 (c) 56 (d) 24
  4. 4.3 × 9 =
  5. 5.A girl is 12 years old and her brother is 6 years older. How old will her brother be in 7 years?
  6. 6.In 3 years a boy will be 15 years old. How old was he 7 years ago?
  7. 7.I thought of a number, multiplied it by 3 and added 9. I got 36. What was my number?
  8. 8.The 1st of a month is a Saturday. What day is the 16th of the same month? (a) Sunday (b) Wednesday (c) Saturday (d) Monday
  9. 9.12345679 × 63 =
  10. 10.Magic trick! Think of 18. Double it, add 8, halve it, then take away 18. What number do you get?
  11. 11.1 + 3 + 5 + … + 19 =
  12. 12.29 × 4 =
  13. 13.A piggy bank has 9 coins of ₹5 and 5 coins of ₹2. How many rupees are in it?
  14. 14.What comes next? 10, 18, 26, 34, ? (a) 50 (b) 42 (c) 43 (d) 34
  15. 15.9 × 6 =
  16. 16.Take 84 and take away the sum of its digits. What do you get?
  17. 17.6 × 9 =
  18. 18.9 × 6 = 5? — what is the missing digit?
  19. 19.1 + 2 + 3 + … + 57 =
  20. 20.What comes next? 16, 20, 24, 28, ? (a) 36 (b) 28 (c) 33 (d) 32
  21. 21.Half of 184 =
  22. 22.A piggy bank has 2 coins of ₹5 and 8 coins of ₹2. How many rupees are in it?
  23. 23.The 1st of a month is a Sunday. What day is the 30th of the same month? (a) Tuesday (b) Thursday (c) Sunday (d) Monday
  24. 24.1 + 2 + 3 + … + 39 =
  25. 25.The 9th of a month is a Monday. What day is the 23rd of the same month? (a) Sunday (b) Tuesday (c) Monday (d) Thursday
  26. 26.12345679 × 36 =
  27. 27.A father is 31 years old and his son is 5. How old was the father when the son was born?
  28. 28.The ages of two twins add up to 16. How old is each twin?
  29. 29.In 4 years a boy will be 12 years old. How old was he 3 years ago?
  30. 30.78 × 100 =
  31. 31.The 8th of a month is a Monday. What day is the 27th of the same month? (a) Saturday (b) Sunday (c) Friday (d) Tuesday
  32. 32.1 + 3 + 5 + … + 27 =
  33. 33.9 × 3 = ?7 — what is the missing digit?
  34. 34.44? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  35. 35.47 × ? = 4700
  36. 36.You have 9 coins. Each coin is ₹1 or ₹2, and together they make ₹17. How many ₹2 coins do you have?
  37. 37.In 3 years a boy will be 11 years old. How old was he 3 years ago?
  38. 38.9 × 1 =
  39. 39.35 × 4 =
  40. 40.What comes next? 19, 24, 29, 34, ? (a) 40 (b) 44 (c) 39 (d) 34

Answer key

  1. Wednesday
  2. 19
  3. 60
  4. 27
  5. 25
  6. 5
  7. 9
  8. Sunday
  9. 777777777
  10. 4
  11. 100
  12. 116
  13. 55
  14. 42
  15. 54
  16. 72
  17. 54
  18. 4
  19. 1653
  20. 32
  21. 92
  22. 26
  23. Monday
  24. 780
  25. Monday
  26. 444444444
  27. 26
  28. 8
  29. 5
  30. 7800
  31. Saturday
  32. 196
  33. 2
  34. 1
  35. 100
  36. 8
  37. 5
  38. 9
  39. 140
  40. 39

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