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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 259 · 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.What comes next? 4, 8, 16, 32, ? (a) 65 (b) 56 (c) 64 (d) 48
  2. 2.Odd one out: which number is NOT in the 4 times table? (a) 12 (b) 25 (c) 36 (d) 24
  3. 3.10 × 4 =
  4. 4.17 × ? = 17000
  5. 5.Magic square (every row, column and diagonal has the same total): 25 10 13 | 4 16 ? | 19 22 7. What is the missing number?
  6. 6.Magic square (every row, column and diagonal has the same total): 25 10 13 | 4 16 28 | ? 22 7. What is the missing number?
  7. 7.If today is Wednesday, what day will it be after 54 days? (a) Monday (b) Tuesday (c) Thursday (d) Sunday
  8. 8.A father is 38 years old and his son is 14. How old was the father when the son was born?
  9. 9.3 × 1000 =
  10. 10.1234567 × 9 + 8 =
  11. 11.3 × 9 =
  12. 12.1 + 2 + 3 + … + 78 =
  13. 13.If today is Thursday, what day was it 37 days ago? (a) Tuesday (b) Friday (c) Monday (d) Wednesday
  14. 14.21 × 4 =
  15. 15.Magic trick! Think of 19. Double it, add 6, halve it, then take away 19. What number do you get?
  16. 16.Double 47 =
  17. 17.Odd one out: which number is NOT in the 5 times table? (a) 25 (b) 15 (c) 35 (d) 43
  18. 18.9 × 1 =
  19. 19.Double 24 =
  20. 20.Do the 1089 trick with 301: reverse and subtract, then reverse that answer and add. What do you get?
  21. 21.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  22. 22.?311 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  23. 23.I thought of a number, added 4 and then doubled it. I got 34. What was my number?
  24. 24.9 × 3 = ?7 — what is the missing digit?
  25. 25.7 × 9 =
  26. 26.Odd one out: which number is NOT in the 5 times table? (a) 31 (b) 40 (c) 20 (d) 35
  27. 27.The 4th of a month is a Wednesday. What day is the 17th of the same month? (a) Tuesday (b) Friday (c) Monday (d) Wednesday
  28. 28.Double 91 =
  29. 29.9 × 7 = ?3 — what is the missing digit?
  30. 30.What comes next? 7, 15, 23, 31, ? (a) 31 (b) 40 (c) 39 (d) 47
  31. 31.You have 12 coins. Each coin is ₹1 or ₹2, and together they make ₹13. How many ₹2 coins do you have?
  32. 32.6 × ? = 6000
  33. 33.What comes next? 1, 9, 17, 25, ? (a) 25 (b) 33 (c) 34 (d) 41
  34. 34.9 × 7 = 6? — what is the missing digit?
  35. 35.9 × 4 = 3? — what is the missing digit?
  36. 36.28 × 4 =
  37. 37.If today is Thursday, what day was it 23 days ago? (a) Monday (b) Friday (c) Wednesday (d) Tuesday
  38. 38.Take 44 and take away the sum of its digits. What do you get?
  39. 39.25 × 1000 =
  40. 40.1 + 2 + 3 + … + 64 =

Answer key

  1. 64
  2. 25
  3. 40
  4. 1000
  5. 28
  6. 19
  7. Monday
  8. 24
  9. 3000
  10. 11111111
  11. 27
  12. 3081
  13. Tuesday
  14. 84
  15. 3
  16. 94
  17. 43
  18. 9
  19. 48
  20. 1089
  21. 396
  22. 4
  23. 13
  24. 2
  25. 63
  26. 31
  27. Tuesday
  28. 182
  29. 6
  30. 39
  31. 1
  32. 1000
  33. 33
  34. 3
  35. 6
  36. 112
  37. Tuesday
  38. 36
  39. 25000
  40. 2080

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