← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 561 · 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. 1.43 × 4 =
  2. 2.76 × ? = 7600
  3. 3.37 × 9 =
  4. 4.The 3rd of a month is a Friday. What day is the 12th of the same month? (a) Wednesday (b) Sunday (c) Monday (d) Saturday
  5. 5.Odd one out: which number is NOT in the 6 times table? (a) 18 (b) 22 (c) 24 (d) 36
  6. 6.146? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  7. 7.Think of 7. Multiply it by 2, then add 6. What number do you end with?
  8. 8.The 8th of a month is a Tuesday. What day is the 25th of the same month? (a) Saturday (b) Thursday (c) Monday (d) Friday
  9. 9.What comes next? 5, 10, 20, 40, ? (a) 70 (b) 60 (c) 81 (d) 80
  10. 10.792 + 297 =
  11. 11.5 × 9 =
  12. 12.Magic square (every row, column and diagonal has the same total): 19 21 ? | 9 17 25 | 23 13 15. What is the missing number?
  13. 13.56 × 4 =
  14. 14.Half of 166 =
  15. 15.A girl is 12 years old and her brother is 6 years older. How old will her brother be in 2 years?
  16. 16.9 × 2 = ?8 — what is the missing digit?
  17. 17.Magic square (every row, column and diagonal has the same total): 5 10 9 | 12 8 4 | ? 6 11. What is the missing number?
  18. 18.I thought of a number, added 9 and then doubled it. I got 58. What was my number?
  19. 19.1 + 2 + 3 + … + 7 =
  20. 20.36 × 10 =
  21. 21.Half of 64 =
  22. 22.Take 20 and take away the sum of its digits. What do you get?
  23. 23.60 × 4 =
  24. 24.1 + 3 + 5 + … + 25 =
  25. 25.Odd one out: which number is NOT in the 3 times table? (a) 9 (b) 18 (c) 27 (d) 29
  26. 26.1234 × 9 + 5 =
  27. 27.Take 315. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  28. 28.Double 49 =
  29. 29.9 × 10 = ?0 — what is the missing digit?
  30. 30.I thought of a number, multiplied it by 5 and added 1. I got 61. What was my number?
  31. 31.If today is Thursday, what day will it be after 12 days? (a) Wednesday (b) Tuesday (c) Monday (d) Friday
  32. 32.What comes next? 4, 8, 16, 32, ? (a) 65 (b) 64 (c) 56 (d) 48
  33. 33.9 × 9 =
  34. 34.1 + 2 + 3 + … + 18 =
  35. 35.31 × 4 =
  36. 36.28 × 4 =
  37. 37.50?0 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  38. 38.9 × 10 = 9? — what is the missing digit?
  39. 39.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?
  40. 40.The 7th of a month is a Tuesday. What day is the 20th of the same month? (a) Thursday (b) Tuesday (c) Sunday (d) Monday

Answer key

  1. 172
  2. 100
  3. 333
  4. Sunday
  5. 22
  6. 7
  7. 20
  8. Friday
  9. 80
  10. 1089
  11. 45
  12. 11
  13. 224
  14. 83
  15. 20
  16. 1
  17. 7
  18. 20
  19. 28
  20. 360
  21. 32
  22. 18
  23. 240
  24. 169
  25. 29
  26. 11111
  27. 198
  28. 98
  29. 9
  30. 12
  31. Tuesday
  32. 64
  33. 81
  34. 171
  35. 124
  36. 112
  37. 4
  38. 0
  39. 1089
  40. Monday

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