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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 739 · 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 8 coins. Each coin is ₹1 or ₹2, and together they make ₹11. How many ₹2 coins do you have?
  2. 2.Take 184. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  3. 3.11 × 11 =
  4. 4.What comes next? 1, 8, 15, 22, ? (a) 22 (b) 29 (c) 30 (d) 36
  5. 5.85 × 100 =
  6. 6.9 × 10 =
  7. 7.9 × 4 = ?6 — what is the missing digit?
  8. 8.What comes next? 2, 4, 8, 16, ? (a) 32 (b) 33 (c) 24 (d) 28
  9. 9.Odd one out: which number is NOT in the 6 times table? (a) 18 (b) 24 (c) 12 (d) 41
  10. 10.379? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  11. 11.Magic square (every row, column and diagonal has the same total): 10 8 18 | ? 12 4 | 6 16 14. What is the missing number?
  12. 12.If today is Saturday, what day was it 13 days ago? (a) Wednesday (b) Saturday (c) Sunday (d) Monday
  13. 13.If today is Monday, what day will it be after 58 days? (a) Thursday (b) Tuesday (c) Saturday (d) Wednesday
  14. 14.The 2nd of a month is a Tuesday. What day is the 29th of the same month? (a) Monday (b) Sunday (c) Thursday (d) Tuesday
  15. 15.1 + 2 + 3 + … + 47 =
  16. 16.10 × 4 =
  17. 17.A girl is 8 years old and her brother is 4 years older. How old will her brother be in 6 years?
  18. 18.The 5th of a month is a Thursday. What day is the 15th of the same month? (a) Wednesday (b) Sunday (c) Saturday (d) Monday
  19. 19.Magic square (every row, column and diagonal has the same total): 4 3 8 | 9 5 ? | 2 7 6. What is the missing number?
  20. 20.950 × 10 =
  21. 21.37 × 18 =
  22. 22.Magic square (every row, column and diagonal has the same total): ? 7 22 | 13 19 25 | 16 31 10. What is the missing number?
  23. 23.882 × 10 =
  24. 24.6 × 4 =
  25. 25.488? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  26. 26.45 × 4 =
  27. 27.9 × 2 = 1? — what is the missing digit?
  28. 28.6 × 9 =
  29. 29.The 9th of a month is a Friday. What day is the 17th of the same month? (a) Saturday (b) Friday (c) Tuesday (d) Sunday
  30. 30.9 × 7 =
  31. 31.1 + 2 + 3 + … + 53 =
  32. 32.If today is Tuesday, what day was it 53 days ago? (a) Saturday (b) Thursday (c) Monday (d) Friday
  33. 33.Half of 96 =
  34. 34.20 × 4 =
  35. 35.17 × ? = 17000
  36. 36.9 × 8 =
  37. 37.108 × 10 =
  38. 38.9 × 3 = ?7 — what is the missing digit?
  39. 39.Odd one out: which number is NOT in the 9 times table? (a) 27 (b) 69 (c) 54 (d) 18
  40. 40.1 + 2 + 3 + … + 15 =

Answer key

  1. 3
  2. 297
  3. 121
  4. 29
  5. 8500
  6. 90
  7. 3
  8. 32
  9. 41
  10. 8
  11. 20
  12. Sunday
  13. Wednesday
  14. Monday
  15. 1128
  16. 40
  17. 18
  18. Sunday
  19. 1
  20. 9500
  21. 666
  22. 28
  23. 8820
  24. 24
  25. 7
  26. 180
  27. 8
  28. 54
  29. Saturday
  30. 63
  31. 1431
  32. Friday
  33. 48
  34. 80
  35. 1000
  36. 72
  37. 1080
  38. 2
  39. 69
  40. 120

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