← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 236 · 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.What comes next? 12, 21, 30, 39, ? (a) 49 (b) 48 (c) 39 (d) 57
  2. 2.In 6 years a boy will be 18 years old. How old was he 3 years ago?
  3. 3.3 × 9 =
  4. 4.In 6 years a boy will be 16 years old. How old was he 4 years ago?
  5. 5.5 × 9 =
  6. 6.Magic trick! Think of 4. Double it, add 8, halve it, then take away 4. What number do you get?
  7. 7.Half of 86 =
  8. 8.1 + 3 + 5 + … + 45 =
  9. 9.Magic square (every row, column and diagonal has the same total): 16 ? 12 | 14 18 22 | 24 10 20. What is the missing number?
  10. 10.46 × 4 =
  11. 11.What comes next? 1, 4, 9, 16, ? (a) 27 (b) 23 (c) 26 (d) 25
  12. 12.40 × 4 =
  13. 13.11 × 11 =
  14. 14.12 × 8 + 2 =
  15. 15.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  16. 16.Think of 10. Multiply it by 4, then add 2. What number do you end with?
  17. 17.9 × 5 =
  18. 18.7 × 9 =
  19. 19.I thought of a number, multiplied it by 4 and added 4. I got 56. What was my number?
  20. 20.You have 9 coins. Each coin is ₹1 or ₹2, and together they make ₹10. How many ₹2 coins do you have?
  21. 21.Magic square (every row, column and diagonal has the same total): ? 7 12 | 13 9 5 | 6 11 10. What is the missing number?
  22. 22.46 × 1000 =
  23. 23.9 × 8 =
  24. 24.9 × 5 = 4? — what is the missing digit?
  25. 25.A father is 34 years old and his son is 4. How old was the father when the son was born?
  26. 26.9 × 2 =
  27. 27.I thought of a number, multiplied it by 2 and added 6. I got 28. What was my number?
  28. 28.1 + 3 + 5 + … + 49 =
  29. 29.Take 178. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  30. 30.1?66 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  31. 31.622 × ? = 6220
  32. 32.Take 66 and take away the sum of its digits. What do you get?
  33. 33.9 × 3 = 2? — what is the missing digit?
  34. 34.111 × 111 =
  35. 35.Odd one out: which number is NOT in the 9 times table? (a) 52 (b) 36 (c) 54 (d) 18
  36. 36.813 × 10 =
  37. 37.1 + 2 + 3 + … + 14 =
  38. 38.Magic square (every row, column and diagonal has the same total): 15 ? 7 | 5 13 21 | 19 9 11. What is the missing number?
  39. 39.Odd one out: which number is NOT in the 7 times table? (a) 32 (b) 56 (c) 42 (d) 21
  40. 40.9 × 4 = ?6 — what is the missing digit?

Answer key

  1. 48
  2. 9
  3. 27
  4. 6
  5. 45
  6. 4
  7. 43
  8. 529
  9. 26
  10. 184
  11. 25
  12. 160
  13. 121
  14. 98
  15. 891
  16. 42
  17. 45
  18. 63
  19. 13
  20. 1
  21. 8
  22. 46000
  23. 72
  24. 5
  25. 30
  26. 18
  27. 11
  28. 625
  29. 693
  30. 5
  31. 10
  32. 54
  33. 7
  34. 12321
  35. 52
  36. 8130
  37. 105
  38. 17
  39. 32
  40. 3

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