← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 708 · 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. 1.12345 × 9 + 6 =
  2. 2.Think of 15. Multiply it by 4, then add 3. What number do you end with?
  3. 3.1234 × 9 + 5 =
  4. 4.8?80 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  5. 5.17 × 4 =
  6. 6.9 × 7 = 6? — what is the missing digit?
  7. 7.Magic square (every row, column and diagonal has the same total): ? 11 6 | 9 7 5 | 8 3 10. What is the missing number?
  8. 8.2 × 100 =
  9. 9.I thought of a number, multiplied it by 3 and added 8. I got 50. What was my number?
  10. 10.Magic trick! Think of 5. Double it, add 16, halve it, then take away 5. What number do you get?
  11. 11.Think of 12. Multiply it by 3, then add 5. What number do you end with?
  12. 12.I thought of a number, added 7 and then doubled it. I got 48. What was my number?
  13. 13.What comes next? 10, 15, 20, 25, ? (a) 35 (b) 30 (c) 31 (d) 25
  14. 14.594 + 495 =
  15. 15.Double 14 =
  16. 16.Odd one out: which number is NOT in the 5 times table? (a) 43 (b) 20 (c) 25 (d) 35
  17. 17.What comes next? 1, 4, 9, 16, ? (a) 23 (b) 25 (c) 26 (d) 27
  18. 18.What comes next? 5, 10, 20, 40, ? (a) 80 (b) 70 (c) 81 (d) 60
  19. 19.What comes next? 3, 6, 12, 24, ? (a) 36 (b) 49 (c) 48 (d) 42
  20. 20.Magic trick! Think of 13. Double it, add 6, halve it, then take away 13. What number do you get?
  21. 21.Half of 16 =
  22. 22.I thought of a number, multiplied it by 5 and added 1. I got 31. What was my number?
  23. 23.Magic square (every row, column and diagonal has the same total): 24 9 30 | 27 21 15 | 12 ? 18. What is the missing number?
  24. 24.Half of 92 =
  25. 25.Double 15 =
  26. 26.1 + 2 + 3 + … + 61 =
  27. 27.6 × 9 =
  28. 28.123 × 9 + 4 =
  29. 29.1 + 3 + 5 + … + 19 =
  30. 30.What comes next? 10, 18, 26, 34, ? (a) 50 (b) 34 (c) 43 (d) 42
  31. 31.12345678 × 8 + 8 =
  32. 32.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  33. 33.If today is Thursday, what day will it be after 76 days? (a) Saturday (b) Tuesday (c) Thursday (d) Wednesday
  34. 34.9 × 4 =
  35. 35.A girl is 7 years old and her brother is 6 years older. How old will her brother be in 6 years?
  36. 36.60 × 4 =
  37. 37.I thought of a number, multiplied it by 4 and added 3. I got 47. What was my number?
  38. 38.A piggy bank has 6 coins of ₹5 and 9 coins of ₹2. How many rupees are in it?
  39. 39.1 + 3 + 5 + … + 39 =
  40. 40.9 × 3 = ?7 — what is the missing digit?

Answer key

  1. 111111
  2. 63
  3. 11111
  4. 2
  5. 68
  6. 3
  7. 4
  8. 200
  9. 14
  10. 8
  11. 41
  12. 17
  13. 30
  14. 1089
  15. 28
  16. 43
  17. 25
  18. 80
  19. 48
  20. 3
  21. 8
  22. 6
  23. 33
  24. 46
  25. 30
  26. 1891
  27. 54
  28. 1111
  29. 100
  30. 42
  31. 98765432
  32. 792
  33. Wednesday
  34. 36
  35. 19
  36. 240
  37. 11
  38. 48
  39. 400
  40. 2

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