← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 243 · 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.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹19. How many ₹2 coins do you have?
  2. 2.I thought of a number, added 1 and then doubled it. I got 18. What was my number?
  3. 3.9 × 9 = ?1 — what is the missing digit?
  4. 4.1 + 2 + 3 + … + 12 =
  5. 5.Magic square (every row, column and diagonal has the same total): 15 8 ? | 10 12 14 | 11 16 9. What is the missing number?
  6. 6.43 × 4 =
  7. 7.4 × 1000 =
  8. 8.What comes next? 16, 25, 36, 49, ? (a) 66 (b) 62 (c) 65 (d) 64
  9. 9.Double 12 =
  10. 10.1 + 3 + 5 + … + 13 =
  11. 11.14 × 4 =
  12. 12.15 × 4 =
  13. 13.54 × 4 =
  14. 14.Half of 46 =
  15. 15.A girl is 11 years old and her brother is 4 years older. How old will her brother be in 3 years?
  16. 16.11 × 4 =
  17. 17.32 × 1000 =
  18. 18.Magic trick! Think of 8. Double it, add 10, halve it, then take away 8. What number do you get?
  19. 19.Half of 92 =
  20. 20.16 × 4 =
  21. 21.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
  22. 22.41?5 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  23. 23.28 × 4 =
  24. 24.9 × 1 =
  25. 25.19 × 4 =
  26. 26.Take 56 and take away the sum of its digits. What do you get?
  27. 27.The ages of two twins add up to 18. How old is each twin?
  28. 28.9 × 5 =
  29. 29.1 + 2 + 3 + … + 13 =
  30. 30.The 9th of a month is a Monday. What day is the 29th of the same month? (a) Wednesday (b) Sunday (c) Saturday (d) Monday
  31. 31.1 + 2 + 3 + … + 93 =
  32. 32.Magic square (every row, column and diagonal has the same total): 20 ? 8 | 5 17 29 | 26 11 14. What is the missing number?
  33. 33.You have 11 coins. Each coin is ₹1 or ₹2, and together they make ₹13. How many ₹2 coins do you have?
  34. 34.9 × 7 = ?3 — what is the missing digit?
  35. 35.1 + 2 + 3 + … + 47 =
  36. 36.1234 × 8 + 4 =
  37. 37.47 × ? = 47000
  38. 38.Magic trick! Think of 3. Double it, add 6, halve it, then take away 3. What number do you get?
  39. 39.?710 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  40. 40.Take 214. Reverse its digits and take the smaller number away from the bigger one. What do you get?

Answer key

  1. 4
  2. 8
  3. 8
  4. 78
  5. 13
  6. 172
  7. 4000
  8. 64
  9. 24
  10. 49
  11. 56
  12. 60
  13. 216
  14. 23
  15. 18
  16. 44
  17. 32000
  18. 5
  19. 46
  20. 64
  21. 1089
  22. 8
  23. 112
  24. 9
  25. 76
  26. 45
  27. 9
  28. 45
  29. 91
  30. Sunday
  31. 4371
  32. 23
  33. 2
  34. 6
  35. 1128
  36. 9876
  37. 1000
  38. 3
  39. 1
  40. 198

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