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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 692 · 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.A father is 36 years old and his son is 10. How old was the father when the son was born?
  2. 2.Magic square (every row, column and diagonal has the same total): 15 12 27 | 30 18 6 | ? 24 21. What is the missing number?
  3. 3.891 + 198 =
  4. 4.590? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  5. 5.43 × 4 =
  6. 6.9 × 4 =
  7. 7.9 × 2 = ?8 — what is the missing digit?
  8. 8.45 × 4 =
  9. 9.?622 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  10. 10.A girl is 11 years old and her brother is 4 years older. How old will her brother be in 3 years?
  11. 11.12 × 8 + 2 =
  12. 12.If today is Saturday, what day will it be after 15 days? (a) Monday (b) Wednesday (c) Sunday (d) Saturday
  13. 13.9 × 2 = 1? — what is the missing digit?
  14. 14.What comes next? 4, 8, 16, 32, ? (a) 56 (b) 65 (c) 64 (d) 48
  15. 15.Take 91 and take away the sum of its digits. What do you get?
  16. 16.What comes next? 2, 9, 16, 23, ? (a) 23 (b) 37 (c) 30 (d) 31
  17. 17.Half of 82 =
  18. 18.25 × 4 =
  19. 19.If today is Friday, what day was it 45 days ago? (a) Tuesday (b) Monday (c) Friday (d) Wednesday
  20. 20.15 × ? = 15000
  21. 21.Half of 182 =
  22. 22.43 × 1000 =
  23. 23.Magic square (every row, column and diagonal has the same total): 21 11 13 | 7 15 23 | 17 19 ?. What is the missing number?
  24. 24.55 × 4 =
  25. 25.The 8th of a month is a Sunday. What day is the 23rd of the same month? (a) Thursday (b) Monday (c) Sunday (d) Tuesday
  26. 26.12345 × 8 + 5 =
  27. 27.What comes next? 2, 4, 8, 16, ? (a) 32 (b) 24 (c) 33 (d) 28
  28. 28.If today is Saturday, what day will it be after 66 days? (a) Wednesday (b) Monday (c) Friday (d) Tuesday
  29. 29.I thought of a number, multiplied it by 3 and added 9. I got 33. What was my number?
  30. 30.Magic square (every row, column and diagonal has the same total): 9 4 5 | 2 6 10 | 7 ? 3. What is the missing number?
  31. 31.9 × 4 = ?6 — what is the missing digit?
  32. 32.A girl is 10 years old and her brother is 2 years older. How old will her brother be in 6 years?
  33. 33.Half of 92 =
  34. 34.51 × 4 =
  35. 35.A father is 45 years old and his son is 11. How old was the father when the son was born?
  36. 36.123 × 9 + 4 =
  37. 37.7 × 9 =
  38. 38.123 × 8 + 3 =
  39. 39.Double 12 =
  40. 40.9 × 7 =

Answer key

  1. 26
  2. 9
  3. 1089
  4. 4
  5. 172
  6. 36
  7. 1
  8. 180
  9. 8
  10. 18
  11. 98
  12. Sunday
  13. 8
  14. 64
  15. 81
  16. 30
  17. 41
  18. 100
  19. Tuesday
  20. 1000
  21. 91
  22. 43000
  23. 9
  24. 220
  25. Monday
  26. 98765
  27. 32
  28. Tuesday
  29. 8
  30. 8
  31. 3
  32. 18
  33. 46
  34. 204
  35. 34
  36. 1111
  37. 63
  38. 987
  39. 24
  40. 63

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