← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 256 · 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. 1.1 + 2 + 3 + … + 18 =
  2. 2.13 × 1000 =
  3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
  4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
  5. 5.45 × 10 =
  6. 6.35 × 4 =
  7. 7.37 × 4 =
  8. 8.9 × 6 = ?4 — what is the missing digit?
  9. 9.22 × 4 =
  10. 10.Half of 36 =
  11. 11.1 + 2 + 3 + … + 15 =
  12. 12.9 × 3 = ?7 — what is the missing digit?
  13. 13.Take 63 and take away the sum of its digits. What do you get?
  14. 14.What comes next? 5, 10, 20, 40, ? (a) 81 (b) 60 (c) 80 (d) 70
  15. 15.12 × 4 =
  16. 16.37 × 12 =
  17. 17.I thought of a number, multiplied it by 5 and added 9. I got 29. What was my number?
  18. 18.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  19. 19.632 × ? = 6320
  20. 20.What comes next? 4, 9, 16, 25, ? (a) 38 (b) 37 (c) 36 (d) 34
  21. 21.?871 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  22. 22.10 × 4 =
  23. 23.7 × 9 =
  24. 24.Magic square (every row, column and diagonal has the same total): 32 17 20 | 11 23 35 | 26 ? 14. What is the missing number?
  25. 25.What comes next? 8, 15, 22, 29, ? (a) 29 (b) 36 (c) 43 (d) 37
  26. 26.9 × 4 = ?6 — what is the missing digit?
  27. 27.The 7th of a month is a Friday. What day is the 27th of the same month? (a) Wednesday (b) Friday (c) Sunday (d) Thursday
  28. 28.36 × 4 =
  29. 29.What comes next? 2, 4, 8, 16, ? (a) 32 (b) 24 (c) 33 (d) 28
  30. 30.Magic square (every row, column and diagonal has the same total): 19 16 ? | 34 22 10 | 13 28 25. What is the missing number?
  31. 31.1 + 2 + 3 + … + 21 =
  32. 32.12345678 × 8 + 8 =
  33. 33.1 + 3 + 5 + … + 21 =
  34. 34.The 8th of a month is a Tuesday. What day is the 16th of the same month? (a) Thursday (b) Wednesday (c) Saturday (d) Tuesday
  35. 35.7 × 4 =
  36. 36.29 × ? = 2900
  37. 37.Magic square (every row, column and diagonal has the same total): 8 9 ? | 3 7 11 | 10 5 6. What is the missing number?
  38. 38.1 + 2 + 3 + … + 95 =
  39. 39.Half of 132 =
  40. 40.123456789 × 8 + 9 =

Answer key

  1. 171
  2. 13000
  3. 792
  4. 495
  5. 450
  6. 140
  7. 148
  8. 5
  9. 88
  10. 18
  11. 120
  12. 2
  13. 54
  14. 80
  15. 48
  16. 444
  17. 4
  18. 792
  19. 10
  20. 36
  21. 2
  22. 40
  23. 63
  24. 29
  25. 36
  26. 3
  27. Thursday
  28. 144
  29. 32
  30. 31
  31. 231
  32. 98765432
  33. 121
  34. Wednesday
  35. 28
  36. 100
  37. 4
  38. 4560
  39. 66
  40. 987654321

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