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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 505 · 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 Monday, what day was it 24 days ago? (a) Monday (b) Saturday (c) Friday (d) Thursday
  2. 2.Odd one out: which number is NOT in the 5 times table? (a) 35 (b) 14 (c) 25 (d) 20
  3. 3.What comes next? 3, 5, 7, 9, ? (a) 13 (b) 9 (c) 12 (d) 11
  4. 4.11 × 100 =
  5. 5.9 × 4 = ?6 — what is the missing digit?
  6. 6.35 × 100 =
  7. 7.9 × 2 =
  8. 8.What comes next? 1, 4, 9, 16, ? (a) 26 (b) 23 (c) 27 (d) 25
  9. 9.37 × 6 =
  10. 10.111111 × 111111 =
  11. 11.12 × 9 + 3 =
  12. 12.9 × 3 =
  13. 13.A girl is 6 years old and her brother is 5 years older. How old will her brother be in 3 years?
  14. 14.Magic square (every row, column and diagonal has the same total): 26 11 14 | 5 17 29 | ? 23 8. What is the missing number?
  15. 15.9 × 9 = ?1 — what is the missing digit?
  16. 16.37 × 21 =
  17. 17.If today is Sunday, what day will it be after 44 days? (a) Monday (b) Tuesday (c) Wednesday (d) Friday
  18. 18.Think of 3. Multiply it by 4, then add 8. What number do you end with?
  19. 19.9 × 8 = 7? — what is the missing digit?
  20. 20.37 × 12 =
  21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
  22. 22.You have 9 coins. Each coin is ₹1 or ₹2, and together they make ₹16. How many ₹2 coins do you have?
  23. 23.A piggy bank has 4 coins of ₹5 and 9 coins of ₹2. How many rupees are in it?
  24. 24.What comes next? 2, 4, 8, 16, ? (a) 33 (b) 28 (c) 24 (d) 32
  25. 25.8?74 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  26. 26.I thought of a number, added 2 and then doubled it. I got 42. What was my number?
  27. 27.Half of 144 =
  28. 28.The 5th of a month is a Sunday. What day is the 15th of the same month? (a) Tuesday (b) Thursday (c) Saturday (d) Wednesday
  29. 29.If today is Monday, what day was it 42 days ago? (a) Sunday (b) Thursday (c) Monday (d) Tuesday
  30. 30.I thought of a number, added 2 and then doubled it. I got 32. What was my number?
  31. 31.A girl is 11 years old and her brother is 2 years older. How old will her brother be in 2 years?
  32. 32.A girl is 5 years old and her brother is 3 years older. How old will her brother be in 2 years?
  33. 33.?858 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  34. 34.Double 31 =
  35. 35.1 × 9 =
  36. 36.Half of 58 =
  37. 37.26 × 4 =
  38. 38.A girl is 6 years old and her brother is 4 years older. How old will her brother be in 6 years?
  39. 39.9 × 8 =
  40. 40.?79 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?

Answer key

  1. Friday
  2. 14
  3. 11
  4. 1100
  5. 3
  6. 3500
  7. 18
  8. 25
  9. 222
  10. 12345654321
  11. 111
  12. 27
  13. 14
  14. 20
  15. 8
  16. 777
  17. Tuesday
  18. 20
  19. 2
  20. 444
  21. 396
  22. 7
  23. 38
  24. 32
  25. 8
  26. 19
  27. 72
  28. Wednesday
  29. Monday
  30. 14
  31. 15
  32. 10
  33. 6
  34. 62
  35. 9
  36. 29
  37. 104
  38. 16
  39. 72
  40. 2

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