← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 770 · 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.Magic square (every row, column and diagonal has the same total): 11 16 15 | 18 ? 10 | 13 12 17. What is the missing number?
  2. 2.Magic trick! Think of 5. Double it, add 6, halve it, then take away 5. What number do you get?
  3. 3.9 × 5 = 4? — what is the missing digit?
  4. 4.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  5. 5.Double 81 =
  6. 6.56 × ? = 5600
  7. 7.Take 428. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  8. 8.9 × 9 =
  9. 9.1 + 2 + 3 + … + 88 =
  10. 10.792 + 297 =
  11. 11.Magic trick! Think of 9. Double it, add 14, halve it, then take away 9. What number do you get?
  12. 12.2 × 9 =
  13. 13.A girl is 8 years old and her brother is 3 years older. How old will her brother be in 9 years?
  14. 14.If today is Tuesday, what day will it be after 49 days? (a) Friday (b) Monday (c) Tuesday (d) Wednesday
  15. 15.57 × 4 =
  16. 16.37 × 27 =
  17. 17.9 × 2 =
  18. 18.A girl is 8 years old and her brother is 3 years older. How old will her brother be in 3 years?
  19. 19.594 + 495 =
  20. 20.9 × 8 = 7? — what is the missing digit?
  21. 21.9 × 4 = ?6 — what is the missing digit?
  22. 22.170? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  23. 23.1 + 2 + 3 + … + 64 =
  24. 24.Magic square (every row, column and diagonal has the same total): 18 3 24 | 21 ? 9 | 6 27 12. What is the missing number?
  25. 25.The 8th of a month is a Sunday. What day is the 20th of the same month? (a) Monday (b) Friday (c) Thursday (d) Saturday
  26. 26.9 × 4 = 3? — what is the missing digit?
  27. 27.I thought of a number, multiplied it by 2 and added 7. I got 11. What was my number?
  28. 28.Double 39 =
  29. 29.Magic trick! Think of 7. Double it, add 10, halve it, then take away 7. What number do you get?
  30. 30.What comes next? 1, 2, 4, 8, ? (a) 14 (b) 17 (c) 12 (d) 16
  31. 31.1 + 3 + 5 + … + 9 =
  32. 32.If today is Saturday, what day was it 58 days ago? (a) Sunday (b) Friday (c) Wednesday (d) Thursday
  33. 33.208 × 10 =
  34. 34.12345 × 9 + 6 =
  35. 35.Half of 32 =
  36. 36.404? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  37. 37.9 × 2 = ?8 — what is the missing digit?
  38. 38.5 × 9 =
  39. 39.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹7. How many ₹2 coins do you have?
  40. 40.Magic square (every row, column and diagonal has the same total): 15 8 13 | 10 12 14 | 11 ? 9. What is the missing number?

Answer key

  1. 14
  2. 3
  3. 5
  4. 594
  5. 162
  6. 100
  7. 396
  8. 81
  9. 3916
  10. 1089
  11. 7
  12. 18
  13. 20
  14. Tuesday
  15. 228
  16. 999
  17. 18
  18. 14
  19. 1089
  20. 2
  21. 3
  22. 1
  23. 2080
  24. 15
  25. Friday
  26. 6
  27. 2
  28. 78
  29. 5
  30. 16
  31. 25
  32. Thursday
  33. 2080
  34. 111111
  35. 16
  36. 1
  37. 1
  38. 45
  39. 2
  40. 16

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