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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 416 · 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.Odd one out: which number is NOT in the 8 times table? (a) 46 (b) 32 (c) 56 (d) 16
  2. 2.Half of 112 =
  3. 3.9 × 6 = ?4 — what is the missing digit?
  4. 4.47?3 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  5. 5.1 + 3 + 5 + … + 19 =
  6. 6.9 × 4 = ?6 — what is the missing digit?
  7. 7.Double 17 =
  8. 8.Double 49 =
  9. 9.9 × 7 =
  10. 10.8?43 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  11. 11.11 × 4 =
  12. 12.9 × 6 =
  13. 13.If today is Monday, what day will it be after 11 days? (a) Friday (b) Thursday (c) Monday (d) Saturday
  14. 14.Double 67 =
  15. 15.537 × 10 =
  16. 16.30 × 4 =
  17. 17.You have 7 coins. Each coin is ₹1 or ₹2, and together they make ₹8. How many ₹2 coins do you have?
  18. 18.The 1st of a month is a Monday. What day is the 25th of the same month? (a) Thursday (b) Wednesday (c) Friday (d) Sunday
  19. 19.49 × 1000 =
  20. 20.Magic square (every row, column and diagonal has the same total): 12 ? 10 | 11 13 15 | 16 9 14. What is the missing number?
  21. 21.111111 × 111111 =
  22. 22.Odd one out: which number is NOT in the 9 times table? (a) 18 (b) 19 (c) 63 (d) 45
  23. 23.What comes next? 5, 10, 20, 40, ? (a) 81 (b) 60 (c) 80 (d) 70
  24. 24.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  25. 25.If today is Tuesday, what day was it 38 days ago? (a) Tuesday (b) Saturday (c) Friday (d) Sunday
  26. 26.198 + 891 =
  27. 27.1 × 9 =
  28. 28.12345679 × 9 =
  29. 29.97 × 100 =
  30. 30.9 × 3 =
  31. 31.What comes next? 1, 2, 4, 8, ? (a) 17 (b) 14 (c) 16 (d) 12
  32. 32.7 × 4 =
  33. 33.Magic square (every row, column and diagonal has the same total): 16 2 12 | 6 ? 14 | 8 18 4. What is the missing number?
  34. 34.34 × 4 =
  35. 35.75 × 100 =
  36. 36.1 + 2 + 3 + … + 23 =
  37. 37.6?57 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  38. 38.Magic square (every row, column and diagonal has the same total): 26 11 32 | 29 ? 17 | 14 35 20. What is the missing number?
  39. 39.1 + 2 + 3 + … + 96 =
  40. 40.18 × 4 =

Answer key

  1. 46
  2. 56
  3. 5
  4. 4
  5. 100
  6. 3
  7. 34
  8. 98
  9. 63
  10. 3
  11. 44
  12. 54
  13. Friday
  14. 134
  15. 5370
  16. 120
  17. 1
  18. Thursday
  19. 49000
  20. 17
  21. 12345654321
  22. 19
  23. 80
  24. 594
  25. Saturday
  26. 1089
  27. 9
  28. 111111111
  29. 9700
  30. 27
  31. 16
  32. 28
  33. 10
  34. 136
  35. 7500
  36. 276
  37. 9
  38. 23
  39. 4656
  40. 72

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