← Mixed trick challenge lesson New set →

Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 519 · 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. 1.9 × 10 = ?0 — what is the missing digit?
  2. 2.If today is Wednesday, what day was it 16 days ago? (a) Monday (b) Tuesday (c) Sunday (d) Thursday
  3. 3.13 × 4 =
  4. 4.42 × 4 =
  5. 5.7 × 9 =
  6. 6.The ages of two twins add up to 10. How old is each twin?
  7. 7.What comes next? 9, 16, 25, 36, ? (a) 51 (b) 49 (c) 50 (d) 47
  8. 8.Take 50 and take away the sum of its digits. What do you get?
  9. 9.9 × 3 = 2? — what is the missing digit?
  10. 10.573? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  11. 11.If today is Saturday, what day will it be after 24 days? (a) Monday (b) Friday (c) Tuesday (d) Wednesday
  12. 12.I thought of a number, multiplied it by 5 and added 9. I got 24. What was my number?
  13. 13.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  14. 14.57 × 10 =
  15. 15.18 × 4 =
  16. 16.14 × 100 =
  17. 17.A father is 45 years old and his son is 11. How old was the father when the son was born?
  18. 18.626? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  19. 19.A piggy bank has 12 coins of ₹5 and 5 coins of ₹2. How many rupees are in it?
  20. 20.A father is 30 years old and his son is 8. How old was the father when the son was born?
  21. 21.9 × 8 = ?2 — what is the missing digit?
  22. 22.9 × 1 =
  23. 23.21 × ? = 2100
  24. 24.If today is Wednesday, what day will it be after 98 days? (a) Saturday (b) Tuesday (c) Wednesday (d) Thursday
  25. 25.1 + 2 + 3 + … + 61 =
  26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
  27. 27.19 × 4 =
  28. 28.Magic trick! Think of 14. Double it, add 12, halve it, then take away 14. What number do you get?
  29. 29.47 × 4 =
  30. 30.1234567 × 9 + 8 =
  31. 31.9 × 2 = 1? — what is the missing digit?
  32. 32.A father is 43 years old and his son is 10. How old was the father when the son was born?
  33. 33.Magic square (every row, column and diagonal has the same total): 8 1 6 | 3 5 7 | 4 ? 2. What is the missing number?
  34. 34.If today is Thursday, what day was it 34 days ago? (a) Thursday (b) Friday (c) Monday (d) Saturday
  35. 35.76?0 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  36. 36.1 + 2 + 3 + … + 23 =
  37. 37.Take 563. Reverse its digits and take the smaller number away from the bigger one. What do you get?
  38. 38.I thought of a number, added 8 and then doubled it. I got 48. What was my number?
  39. 39.The 5th of a month is a Saturday. What day is the 18th of the same month? (a) Thursday (b) Saturday (c) Friday (d) Monday
  40. 40.48 × 1000 =

Answer key

  1. 9
  2. Monday
  3. 52
  4. 168
  5. 63
  6. 5
  7. 49
  8. 45
  9. 7
  10. 3
  11. Tuesday
  12. 3
  13. 891
  14. 570
  15. 72
  16. 1400
  17. 34
  18. 4
  19. 70
  20. 22
  21. 7
  22. 9
  23. 100
  24. Wednesday
  25. 1891
  26. 396
  27. 76
  28. 6
  29. 188
  30. 11111111
  31. 8
  32. 33
  33. 9
  34. Friday
  35. 5
  36. 276
  37. 198
  38. 16
  39. Friday
  40. 48000

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