← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 234 · 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? 1, 2, 4, 8, ? (a) 16 (b) 12 (c) 14 (d) 17
  2. 2.9 × 4 = 3? — what is the missing digit?
  3. 3.Half of 86 =
  4. 4.Magic trick! Think of 18. Double it, add 14, halve it, then take away 18. What number do you get?
  5. 5.I thought of a number, added 5 and then doubled it. I got 38. What was my number?
  6. 6.I thought of a number, added 1 and then doubled it. I got 18. What was my number?
  7. 7.9 × 8 = 7? — what is the missing digit?
  8. 8.9 × 9 =
  9. 9.63?7 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  10. 10.10 × 9 =
  11. 11.36 × 4 =
  12. 12.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
  13. 13.A father is 32 years old and his son is 6. How old was the father when the son was born?
  14. 14.9 × 6 = 5? — what is the missing digit?
  15. 15.The 4th of a month is a Monday. What day is the 25th of the same month? (a) Monday (b) Tuesday (c) Thursday (d) Sunday
  16. 16.12 × 8 + 2 =
  17. 17.Magic square (every row, column and diagonal has the same total): 21 ? 17 | 11 15 19 | 13 23 9. What is the missing number?
  18. 18.Double 87 =
  19. 19.?102 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  20. 20.I thought of a number, multiplied it by 2 and added 6. I got 22. What was my number?
  21. 21.What comes next? 1, 9, 17, 25, ? (a) 41 (b) 25 (c) 33 (d) 34
  22. 22.I thought of a number, added 7 and then doubled it. I got 28. What was my number?
  23. 23.32 × 1000 =
  24. 24.If today is Thursday, what day was it 57 days ago? (a) Thursday (b) Saturday (c) Tuesday (d) Wednesday
  25. 25.Take 873. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  26. 26.21 × 1000 =
  27. 27.12 × 4 =
  28. 28.What comes next? 25, 36, 49, 64, ? (a) 79 (b) 82 (c) 81 (d) 83
  29. 29.A piggy bank has 9 coins of ₹5 and 13 coins of ₹2. How many rupees are in it?
  30. 30.I thought of a number, added 9 and then doubled it. I got 30. What was my number?
  31. 31.44 × 100 =
  32. 32.A girl is 6 years old and her brother is 2 years older. How old will her brother be in 5 years?
  33. 33.539? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  34. 34.2 × 9 =
  35. 35.9 × 8 =
  36. 36.Magic square (every row, column and diagonal has the same total): 9 19 5 | 7 ? 15 | 17 3 13. What is the missing number?
  37. 37.Magic square (every row, column and diagonal has the same total): 19 22 7 | 4 ? 28 | 25 10 13. What is the missing number?
  38. 38.Odd one out: which number is NOT in the 6 times table? (a) 18 (b) 42 (c) 36 (d) 39
  39. 39.37 × 15 =
  40. 40.87 × 100 =

Answer key

  1. 16
  2. 6
  3. 43
  4. 7
  5. 14
  6. 8
  7. 2
  8. 81
  9. 2
  10. 90
  11. 144
  12. 1089
  13. 26
  14. 4
  15. Monday
  16. 98
  17. 7
  18. 174
  19. 6
  20. 8
  21. 33
  22. 7
  23. 32000
  24. Wednesday
  25. 495
  26. 21000
  27. 48
  28. 81
  29. 71
  30. 6
  31. 4400
  32. 13
  33. 1
  34. 18
  35. 72
  36. 11
  37. 16
  38. 39
  39. 555
  40. 8700

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