← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 723 · 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. 1.12 × 8 + 2 =
  2. 2.297 + 792 =
  3. 3.504 × 10 =
  4. 4.Double 27 =
  5. 5.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹6. How many ₹2 coins do you have?
  6. 6.I thought of a number, added 9 and then doubled it. I got 54. What was my number?
  7. 7.2 × 9 =
  8. 8.Half of 144 =
  9. 9.I thought of a number, added 6 and then doubled it. I got 24. What was my number?
  10. 10.54 × 4 =
  11. 11.16 × 4 =
  12. 12.What comes next? 2, 5, 8, 11, ? (a) 15 (b) 17 (c) 14 (d) 11
  13. 13.57 × 4 =
  14. 14.You have 13 coins. Each coin is ₹1 or ₹2, and together they make ₹21. How many ₹2 coins do you have?
  15. 15.What comes next? 8, 11, 14, 17, ? (a) 17 (b) 20 (c) 23 (d) 21
  16. 16.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
  17. 17.A piggy bank has 11 coins of ₹5 and 14 coins of ₹2. How many rupees are in it?
  18. 18.Magic square (every row, column and diagonal has the same total): 27 30 15 | 12 24 36 | 33 18 ?. What is the missing number?
  19. 19.11 × 11 =
  20. 20.I thought of a number, multiplied it by 2 and added 1. I got 9. What was my number?
  21. 21.9 × 10 =
  22. 22.If today is Sunday, what day was it 36 days ago? (a) Friday (b) Sunday (c) Tuesday (d) Saturday
  23. 23.1 × 9 =
  24. 24.Magic square (every row, column and diagonal has the same total): 9 8 ? | 14 10 6 | 7 12 11. What is the missing number?
  25. 25.Double 91 =
  26. 26.What comes next? 10, 16, 22, 28, ? (a) 35 (b) 34 (c) 40 (d) 28
  27. 27.42 × 4 =
  28. 28.1 + 2 + 3 + … + 30 =
  29. 29.448? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  30. 30.5 × 9 =
  31. 31.Think of 13. Multiply it by 2, then add 4. What number do you end with?
  32. 32.1 + 3 + 5 + … + 15 =
  33. 33.What comes next? 36, 49, 64, 81, ? (a) 100 (b) 102 (c) 101 (d) 98
  34. 34.Magic trick! Think of 18. Double it, add 12, halve it, then take away 18. What number do you get?
  35. 35.58 × 4 =
  36. 36.The 2nd of a month is a Friday. What day is the 10th of the same month? (a) Sunday (b) Friday (c) Tuesday (d) Saturday
  37. 37.1 + 2 + 3 + … + 52 =
  38. 38.The 4th of a month is a Monday. What day is the 15th of the same month? (a) Monday (b) Thursday (c) Friday (d) Saturday
  39. 39.What comes next? 1, 2, 4, 8, ? (a) 14 (b) 16 (c) 12 (d) 17
  40. 40.What comes next? 16, 18, 20, 22, ? (a) 26 (b) 22 (c) 25 (d) 24

Answer key

  1. 98
  2. 1089
  3. 5040
  4. 54
  5. 1
  6. 18
  7. 18
  8. 72
  9. 6
  10. 216
  11. 64
  12. 14
  13. 228
  14. 8
  15. 20
  16. 1089
  17. 83
  18. 21
  19. 121
  20. 4
  21. 90
  22. Saturday
  23. 9
  24. 13
  25. 182
  26. 34
  27. 168
  28. 465
  29. 2
  30. 45
  31. 30
  32. 64
  33. 100
  34. 6
  35. 232
  36. Saturday
  37. 1378
  38. Friday
  39. 16
  40. 24

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