← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 176 · 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. 1.2 × 9 =
  2. 2.In 3 years a boy will be 17 years old. How old was he 6 years ago?
  3. 3.9 × 4 = ?6 — what is the missing digit?
  4. 4.82 × 10 =
  5. 5.7 × 4 =
  6. 6.A father is 37 years old and his son is 5. How old was the father when the son was born?
  7. 7.The 6th of a month is a Sunday. What day is the 19th of the same month? (a) Saturday (b) Sunday (c) Tuesday (d) Friday
  8. 8.Take 907. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  9. 9.36 × 4 =
  10. 10.Odd one out: which number is NOT in the 6 times table? (a) 24 (b) 47 (c) 36 (d) 30
  11. 11.1 + 2 + 3 + … + 99 =
  12. 12.Double 37 =
  13. 13.12345679 × 18 =
  14. 14.Think of 5. Multiply it by 3, then add 7. What number do you end with?
  15. 15.What comes next? 16, 25, 36, 49, ? (a) 65 (b) 62 (c) 66 (d) 64
  16. 16.9 × 2 = ?8 — what is the missing digit?
  17. 17.62 × ? = 6200
  18. 18.What comes next? 16, 25, 34, 43, ? (a) 52 (b) 53 (c) 61 (d) 43
  19. 19.Magic square (every row, column and diagonal has the same total): 12 27 24 | 33 ? 9 | 18 15 30. What is the missing number?
  20. 20.The 9th of a month is a Sunday. What day is the 17th of the same month? (a) Thursday (b) Sunday (c) Monday (d) Tuesday
  21. 21.1 + 2 + 3 + … + 27 =
  22. 22.What comes next? 2, 4, 8, 16, ? (a) 33 (b) 24 (c) 32 (d) 28
  23. 23.1 + 3 + 5 + … + 11 =
  24. 24.Magic trick! Think of 16. Double it, add 16, halve it, then take away 16. What number do you get?
  25. 25.Double 25 =
  26. 26.Odd one out: which number is NOT in the 3 times table? (a) 12 (b) 29 (c) 21 (d) 30
  27. 27.27?0 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  28. 28.9 × 6 = 5? — what is the missing digit?
  29. 29.What comes next? 25, 36, 49, 64, ? (a) 82 (b) 83 (c) 79 (d) 81
  30. 30.37 × 21 =
  31. 31.Take 35 and take away the sum of its digits. What do you get?
  32. 32.The ages of two twins add up to 20. How old is each twin?
  33. 33.In 4 years a boy will be 16 years old. How old was he 6 years ago?
  34. 34.If today is Friday, what day will it be after 74 days? (a) Friday (b) Wednesday (c) Monday (d) Tuesday
  35. 35.1 + 3 + 5 + … + 41 =
  36. 36.1 × 9 =
  37. 37.The 5th of a month is a Tuesday. What day is the 13th of the same month? (a) Thursday (b) Tuesday (c) Wednesday (d) Saturday
  38. 38.14 × 4 =
  39. 39.924 × 10 =
  40. 40.1 + 2 + 3 + … + 19 =

Answer key

  1. 18
  2. 8
  3. 3
  4. 820
  5. 28
  6. 32
  7. Saturday
  8. 198
  9. 144
  10. 47
  11. 4950
  12. 74
  13. 222222222
  14. 22
  15. 64
  16. 1
  17. 100
  18. 52
  19. 21
  20. Monday
  21. 378
  22. 32
  23. 36
  24. 8
  25. 50
  26. 29
  27. 9
  28. 4
  29. 81
  30. 777
  31. 27
  32. 10
  33. 6
  34. Tuesday
  35. 441
  36. 9
  37. Wednesday
  38. 56
  39. 9240
  40. 190

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks