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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 908 · 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. 1.351 × 10 =
  2. 2.What comes next? 4, 9, 16, 25, ? (a) 34 (b) 36 (c) 38 (d) 37
  3. 3.97 × 100 =
  4. 4.1 + 2 + 3 + … + 73 =
  5. 5.526 × 10 =
  6. 6.What comes next? 11, 19, 27, 35, ? (a) 43 (b) 35 (c) 44 (d) 51
  7. 7.8 × 9 =
  8. 8.The 7th of a month is a Thursday. What day is the 27th of the same month? (a) Wednesday (b) Tuesday (c) Saturday (d) Thursday
  9. 9.9 × 6 = ?4 — what is the missing digit?
  10. 10.54 × 100 =
  11. 11.12345679 × 63 =
  12. 12.If today is Friday, what day will it be after 69 days? (a) Wednesday (b) Friday (c) Sunday (d) Thursday
  13. 13.Odd one out: which number is NOT in the 4 times table? (a) 13 (b) 8 (c) 16 (d) 24
  14. 14.30 × 4 =
  15. 15.9 × 9 =
  16. 16.1 × 9 =
  17. 17.37 × 6 =
  18. 18.?33 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  19. 19.Double 94 =
  20. 20.Magic square (every row, column and diagonal has the same total): 20 ? 12 | 10 18 26 | 24 14 16. What is the missing number?
  21. 21.Double 57 =
  22. 22.60 × 4 =
  23. 23.What comes next? 1, 4, 9, 16, ? (a) 27 (b) 25 (c) 26 (d) 23
  24. 24.9 × 5 = ?5 — what is the missing digit?
  25. 25.9 × 4 = 3? — what is the missing digit?
  26. 26.1 + 3 + 5 + … + 45 =
  27. 27.123 × 8 + 3 =
  28. 28.12345678 × 9 + 9 =
  29. 29.The ages of two twins add up to 28. How old is each twin?
  30. 30.9 × 8 =
  31. 31.What comes next? 4, 8, 16, 32, ? (a) 48 (b) 56 (c) 64 (d) 65
  32. 32.9 × 2 = 1? — what is the missing digit?
  33. 33.22 × 1000 =
  34. 34.91 × 100 =
  35. 35.?150 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  36. 36.?559 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  37. 37.9 × 2 = ?8 — what is the missing digit?
  38. 38.198 × ? = 1980
  39. 39.?013 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  40. 40.What comes next? 9, 16, 25, 36, ? (a) 51 (b) 47 (c) 49 (d) 50

Answer key

  1. 3510
  2. 36
  3. 9700
  4. 2701
  5. 5260
  6. 43
  7. 72
  8. Wednesday
  9. 5
  10. 5400
  11. 777777777
  12. Thursday
  13. 13
  14. 120
  15. 81
  16. 9
  17. 222
  18. 3
  19. 188
  20. 22
  21. 114
  22. 240
  23. 25
  24. 4
  25. 6
  26. 529
  27. 987
  28. 111111111
  29. 14
  30. 72
  31. 64
  32. 8
  33. 22000
  34. 9100
  35. 3
  36. 8
  37. 1
  38. 10
  39. 5
  40. 49

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