← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 120 · 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. 1.37 × 3 =
  2. 2.What comes next? 1, 4, 9, 16, ? (a) 25 (b) 26 (c) 23 (d) 27
  3. 3.Take 44 and take away the sum of its digits. What do you get?
  4. 4.If today is Tuesday, what day was it 15 days ago? (a) Monday (b) Tuesday (c) Thursday (d) Sunday
  5. 5.Half of 64 =
  6. 6.I thought of a number, multiplied it by 5 and added 8. I got 23. What was my number?
  7. 7.14 × 4 =
  8. 8.?49 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  9. 9.A piggy bank has 4 coins of ₹5 and 10 coins of ₹2. How many rupees are in it?
  10. 10.35 × 4 =
  11. 11.I thought of a number, multiplied it by 4 and added 7. I got 23. What was my number?
  12. 12.Take 66 and take away the sum of its digits. What do you get?
  13. 13.Double 33 =
  14. 14.1 × 9 =
  15. 15.Take 34 and take away the sum of its digits. What do you get?
  16. 16.If today is Thursday, what day will it be after 16 days? (a) Friday (b) Tuesday (c) Sunday (d) Saturday
  17. 17.1 + 3 + 5 + … + 19 =
  18. 18.7 × ? = 7000
  19. 19.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
  20. 20.Magic square (every row, column and diagonal has the same total): 19 9 23 | 21 ? 13 | 11 25 15. What is the missing number?
  21. 21.77?8 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  22. 22.Double 16 =
  23. 23.24 × 4 =
  24. 24.Magic square (every row, column and diagonal has the same total): 4 ? 8 | 11 7 3 | 6 5 10. What is the missing number?
  25. 25.I thought of a number, multiplied it by 2 and added 9. I got 19. What was my number?
  26. 26.55 × ? = 5500
  27. 27.9 × 9 = 8? — what is the missing digit?
  28. 28.Half of 178 =
  29. 29.9 × 6 =
  30. 30.25 × ? = 25000
  31. 31.I thought of a number, added 1 and then doubled it. I got 24. What was my number?
  32. 32.?337 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  33. 33.9 × 9 =
  34. 34.What comes next? 3, 6, 12, 24, ? (a) 48 (b) 42 (c) 49 (d) 36
  35. 35.1 + 2 + 3 + … + 45 =
  36. 36.1 + 2 + 3 + … + 65 =
  37. 37.A father is 35 years old and his son is 4. How old was the father when the son was born?
  38. 38.I thought of a number, added 3 and then doubled it. I got 38. What was my number?
  39. 39.If today is Monday, what day was it 31 days ago? (a) Monday (b) Saturday (c) Thursday (d) Friday
  40. 40.Magic trick! Think of 12. Double it, add 16, halve it, then take away 12. What number do you get?

Answer key

  1. 111
  2. 25
  3. 36
  4. Monday
  5. 32
  6. 3
  7. 56
  8. 5
  9. 40
  10. 140
  11. 4
  12. 54
  13. 66
  14. 9
  15. 27
  16. Saturday
  17. 100
  18. 1000
  19. 1089
  20. 17
  21. 5
  22. 32
  23. 96
  24. 9
  25. 5
  26. 100
  27. 1
  28. 89
  29. 54
  30. 1000
  31. 11
  32. 5
  33. 81
  34. 48
  35. 1035
  36. 2145
  37. 31
  38. 16
  39. Friday
  40. 8

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