← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 402 · 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.If today is Friday, what day was it 46 days ago? (a) Thursday (b) Sunday (c) Tuesday (d) Monday
  2. 2.550? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  3. 3.37 × 1000 =
  4. 4.29?5 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  5. 5.42 × 4 =
  6. 6.What comes next? 1, 2, 4, 8, ? (a) 16 (b) 14 (c) 17 (d) 12
  7. 7.12345679 × 9 =
  8. 8.8 × 9 =
  9. 9.Half of 196 =
  10. 10.Magic square (every row, column and diagonal has the same total): 15 8 ? | 10 12 14 | 11 16 9. What is the missing number?
  11. 11.42 × 100 =
  12. 12.9 × 2 = 1? — what is the missing digit?
  13. 13.Double 91 =
  14. 14.I thought of a number, multiplied it by 2 and added 1. I got 19. What was my number?
  15. 15.The 1st of a month is a Thursday. What day is the 26th of the same month? (a) Monday (b) Thursday (c) Tuesday (d) Sunday
  16. 16.1 + 2 + 3 + … + 60 =
  17. 17.9 × 10 =
  18. 18.Odd one out: which number is NOT in the 5 times table? (a) 25 (b) 15 (c) 34 (d) 30
  19. 19.Half of 168 =
  20. 20.39 × 4 =
  21. 21.I thought of a number, multiplied it by 3 and added 7. I got 13. What was my number?
  22. 22.Double 33 =
  23. 23.5 × 100 =
  24. 24.In 6 years a boy will be 17 years old. How old was he 3 years ago?
  25. 25.34 × 4 =
  26. 26.9 × 8 =
  27. 27.You have 10 coins. Each coin is ₹1 or ₹2, and together they make ₹18. How many ₹2 coins do you have?
  28. 28.Double 79 =
  29. 29.1 + 3 + 5 + … + 11 =
  30. 30.Magic trick! Think of 19. Double it, add 4, halve it, then take away 19. What number do you get?
  31. 31.A father is 32 years old and his son is 5. How old was the father when the son was born?
  32. 32.Half of 192 =
  33. 33.Think of 15. Multiply it by 5, then add 6. What number do you end with?
  34. 34.29 × 4 =
  35. 35.7 × 9 =
  36. 36.Double 72 =
  37. 37.753 × 10 =
  38. 38.If today is Saturday, what day was it 8 days ago? (a) Saturday (b) Monday (c) Thursday (d) Friday
  39. 39.If today is Saturday, what day was it 29 days ago? (a) Saturday (b) Friday (c) Thursday (d) Monday
  40. 40.You have 7 coins. Each coin is ₹1 or ₹2, and together they make ₹10. How many ₹2 coins do you have?

Answer key

  1. Monday
  2. 8
  3. 37000
  4. 2
  5. 168
  6. 16
  7. 111111111
  8. 72
  9. 98
  10. 13
  11. 4200
  12. 8
  13. 182
  14. 9
  15. Monday
  16. 1830
  17. 90
  18. 34
  19. 84
  20. 156
  21. 2
  22. 66
  23. 500
  24. 8
  25. 136
  26. 72
  27. 8
  28. 158
  29. 36
  30. 2
  31. 27
  32. 96
  33. 81
  34. 116
  35. 63
  36. 144
  37. 7530
  38. Friday
  39. Friday
  40. 3

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