← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 139 · 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. 1.12345679 × 27 =
  2. 2.1 + 2 + 3 + … + 62 =
  3. 3.12 × ? = 12000
  4. 4.What comes next? 2, 4, 8, 16, ? (a) 24 (b) 32 (c) 28 (d) 33
  5. 5.In 3 years a boy will be 14 years old. How old was he 3 years ago?
  6. 6.9 × 10 =
  7. 7.17 × 4 =
  8. 8.Double 81 =
  9. 9.Take 52 and take away the sum of its digits. What do you get?
  10. 10.The 4th of a month is a Tuesday. What day is the 19th of the same month? (a) Thursday (b) Saturday (c) Wednesday (d) Tuesday
  11. 11.Double 25 =
  12. 12.9 × 5 = ?5 — what is the missing digit?
  13. 13.56 × 4 =
  14. 14.38 × 4 =
  15. 15.Double 78 =
  16. 16.1 + 3 + 5 + … + 15 =
  17. 17.1234567 × 9 + 8 =
  18. 18.A piggy bank has 9 coins of ₹5 and 6 coins of ₹2. How many rupees are in it?
  19. 19.9 × 3 = 2? — what is the missing digit?
  20. 20.The ages of two twins add up to 10. How old is each twin?
  21. 21.Magic square (every row, column and diagonal has the same total): ? 10 5 | 4 8 12 | 11 6 7. What is the missing number?
  22. 22.6 × 9 =
  23. 23.396 + 693 =
  24. 24.1234 × 9 + 5 =
  25. 25.55 × 4 =
  26. 26.594 + 495 =
  27. 27.If today is Monday, what day was it 11 days ago? (a) Friday (b) Thursday (c) Wednesday (d) Sunday
  28. 28.9 × 4 = ?6 — what is the missing digit?
  29. 29.In 3 years a boy will be 11 years old. How old was he 2 years ago?
  30. 30.Magic square (every row, column and diagonal has the same total): 5 15 13 | 19 11 3 | ? 7 17. What is the missing number?
  31. 31.What comes next? 4, 9, 16, 25, ? (a) 38 (b) 37 (c) 34 (d) 36
  32. 32.If today is Monday, what day was it 16 days ago? (a) Saturday (b) Sunday (c) Friday (d) Tuesday
  33. 33.If today is Saturday, what day was it 14 days ago? (a) Friday (b) Saturday (c) Sunday (d) Tuesday
  34. 34.Double 93 =
  35. 35.Magic square (every row, column and diagonal has the same total): 6 7 ? | 1 5 9 | 8 3 4. What is the missing number?
  36. 36.Take 93 and take away the sum of its digits. What do you get?
  37. 37.9 × 10 = ?0 — what is the missing digit?
  38. 38.18 × 4 =
  39. 39.?392 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  40. 40.46 × 1000 =

Answer key

  1. 333333333
  2. 1953
  3. 1000
  4. 32
  5. 8
  6. 90
  7. 68
  8. 162
  9. 45
  10. Wednesday
  11. 50
  12. 4
  13. 224
  14. 152
  15. 156
  16. 64
  17. 11111111
  18. 57
  19. 7
  20. 5
  21. 9
  22. 54
  23. 1089
  24. 11111
  25. 220
  26. 1089
  27. Thursday
  28. 3
  29. 6
  30. 9
  31. 36
  32. Saturday
  33. Saturday
  34. 186
  35. 2
  36. 81
  37. 9
  38. 72
  39. 4
  40. 46000

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