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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 742 · 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 16 =
  2. 2.Half of 82 =
  3. 3.Double 13 =
  4. 4.Double 12 =
  5. 5.Half of 118 =
  6. 6.Half of 192 =
  7. 7.Double 35 =
  8. 8.Double 91 =
  9. 9.Half of 32 =
  10. 10.Double 93 =
  11. 11.Double 17 =
  12. 12.Half of 92 =
  13. 13.Double 24 =
  14. 14.Double 61 =
  15. 15.Half of 182 =
  16. 16.Double 49 =
  17. 17.Double 68 =
  18. 18.Double 41 =
  19. 19.Half of 114 =
  20. 20.Half of 24 =
  21. 21.Double 85 =
  22. 22.Half of 122 =
  23. 23.Half of 166 =
  24. 24.Half of 64 =
  25. 25.Double 16 =
  26. 26.Double 33 =
  27. 27.Half of 112 =
  28. 28.Half of 184 =
  29. 29.Half of 94 =
  30. 30.Double 81 =
  31. 31.Half of 46 =
  32. 32.Double 58 =
  33. 33.Half of 18 =
  34. 34.Half of 12 =
  35. 35.Half of 126 =
  36. 36.Double 71 =
  37. 37.Double 36 =
  38. 38.Double 83 =
  39. 39.Double 48 =
  40. 40.Double 86 =

Answer key

  1. 8
  2. 41
  3. 26
  4. 24
  5. 59
  6. 96
  7. 70
  8. 182
  9. 16
  10. 186
  11. 34
  12. 46
  13. 48
  14. 122
  15. 91
  16. 98
  17. 136
  18. 82
  19. 57
  20. 12
  21. 170
  22. 61
  23. 83
  24. 32
  25. 32
  26. 66
  27. 56
  28. 92
  29. 47
  30. 162
  31. 23
  32. 116
  33. 9
  34. 6
  35. 63
  36. 142
  37. 72
  38. 166
  39. 96
  40. 172

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