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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 710 · 40 questions
TalentJR

The trick (Split and double): Split the number into tens and ones: 37 = 30 + 7. Double each part (30 → 60, 7 → 14) — or halve each part. Add the two answers: 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.Half of 84 =
  2. 2.Double 38 =
  3. 3.Half of 82 =
  4. 4.Half of 52 =
  5. 5.Half of 108 =
  6. 6.Half of 28 =
  7. 7.Half of 22 =
  8. 8.Double 46 =
  9. 9.Double 96 =
  10. 10.Double 27 =
  11. 11.Double 47 =
  12. 12.Half of 68 =
  13. 13.Double 28 =
  14. 14.Double 14 =
  15. 15.Half of 162 =
  16. 16.Double 31 =
  17. 17.Double 71 =
  18. 18.Double 21 =
  19. 19.Double 89 =
  20. 20.Half of 122 =
  21. 21.Half of 198 =
  22. 22.Half of 132 =
  23. 23.Half of 112 =
  24. 24.Double 19 =
  25. 25.Half of 14 =
  26. 26.Double 53 =
  27. 27.Double 84 =
  28. 28.Double 91 =
  29. 29.Double 56 =
  30. 30.Double 61 =
  31. 31.Double 73 =
  32. 32.Double 83 =
  33. 33.Half of 34 =
  34. 34.Half of 26 =
  35. 35.Half of 92 =
  36. 36.Double 74 =
  37. 37.Half of 36 =
  38. 38.Double 75 =
  39. 39.Double 45 =
  40. 40.Double 55 =

Answer key

  1. 42
  2. 76
  3. 41
  4. 26
  5. 54
  6. 14
  7. 11
  8. 92
  9. 192
  10. 54
  11. 94
  12. 34
  13. 56
  14. 28
  15. 81
  16. 62
  17. 142
  18. 42
  19. 178
  20. 61
  21. 99
  22. 66
  23. 56
  24. 38
  25. 7
  26. 106
  27. 168
  28. 182
  29. 112
  30. 122
  31. 146
  32. 166
  33. 17
  34. 13
  35. 46
  36. 148
  37. 18
  38. 150
  39. 90
  40. 110

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