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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 953 · 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.What comes next? 25, 36, 49, 64, ? (a) 81 (b) 82 (c) 83 (d) 79
  2. 2.What comes next? 9, 16, 25, 36, ? (a) 50 (b) 51 (c) 47 (d) 49
  3. 3.If today is Sunday, what day was it 8 days ago? (a) Sunday (b) Friday (c) Tuesday (d) Saturday
  4. 4.5 × 9 =
  5. 5.9 × 9 = ?1 — what is the missing digit?
  6. 6.3?57 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  7. 7.The 9th of a month is a Friday. What day is the 22nd of the same month? (a) Friday (b) Thursday (c) Sunday (d) Wednesday
  8. 8.1 + 2 + 3 + … + 30 =
  9. 9.Magic square (every row, column and diagonal has the same total): 20 10 24 | 22 18 14 | 12 26 ?. What is the missing number?
  10. 10.?08 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  11. 11.5 × ? = 5000
  12. 12.12345679 × 81 =
  13. 13.I thought of a number, added 3 and then doubled it. I got 36. What was my number?
  14. 14.1 × 9 =
  15. 15.12345 × 9 + 6 =
  16. 16.If today is Monday, what day will it be after 74 days? (a) Thursday (b) Saturday (c) Friday (d) Monday
  17. 17.What comes next? 4, 9, 16, 25, ? (a) 38 (b) 36 (c) 37 (d) 34
  18. 18.1234 × 9 + 5 =
  19. 19.9 × 3 = 2? — what is the missing digit?
  20. 20.44 × 4 =
  21. 21.9 × 7 = 6? — what is the missing digit?
  22. 22.Double 83 =
  23. 23.What comes next? 2, 4, 8, 16, ? (a) 28 (b) 24 (c) 32 (d) 33
  24. 24.70?4 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  25. 25.1 + 3 + 5 + … + 43 =
  26. 26.Magic square (every row, column and diagonal has the same total): 7 12 11 | ? 10 6 | 9 8 13. What is the missing number?
  27. 27.1234567 × 8 + 7 =
  28. 28.7 × 10 =
  29. 29.9 × 5 = 4? — what is the missing digit?
  30. 30.Odd one out: which number is NOT in the 4 times table? (a) 13 (b) 12 (c) 16 (d) 28
  31. 31.You have 10 coins. Each coin is ₹1 or ₹2, and together they make ₹17. How many ₹2 coins do you have?
  32. 32.Magic square (every row, column and diagonal has the same total): 29 14 17 | 8 20 32 | 23 ? 11. What is the missing number?
  33. 33.Magic square (every row, column and diagonal has the same total): ? 25 11 | 13 17 21 | 23 9 19. What is the missing number?
  34. 34.192 × ? = 1920
  35. 35.Magic square (every row, column and diagonal has the same total): ? 9 2 | 3 5 7 | 8 1 6. What is the missing number?
  36. 36.What comes next? 3, 6, 12, 24, ? (a) 49 (b) 48 (c) 36 (d) 42
  37. 37.What comes next? 36, 49, 64, 81, ? (a) 102 (b) 100 (c) 98 (d) 101
  38. 38.1 + 2 + 3 + … + 45 =
  39. 39.Take 66 and take away the sum of its digits. What do you get?
  40. 40.49 × 4 =

Answer key

  1. 81
  2. 49
  3. Saturday
  4. 45
  5. 8
  6. 3
  7. Thursday
  8. 465
  9. 16
  10. 1
  11. 1000
  12. 999999999
  13. 15
  14. 9
  15. 111111
  16. Friday
  17. 36
  18. 11111
  19. 7
  20. 176
  21. 3
  22. 166
  23. 32
  24. 7
  25. 484
  26. 14
  27. 9876543
  28. 70
  29. 5
  30. 13
  31. 7
  32. 26
  33. 15
  34. 10
  35. 4
  36. 48
  37. 100
  38. 1035
  39. 54
  40. 196

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