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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 448 · 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.Double 81 =
  2. 2.Half of 96 =
  3. 3.Half of 144 =
  4. 4.Half of 118 =
  5. 5.Double 31 =
  6. 6.Double 29 =
  7. 7.Half of 132 =
  8. 8.Half of 172 =
  9. 9.Half of 42 =
  10. 10.Half of 108 =
  11. 11.Double 57 =
  12. 12.Half of 142 =
  13. 13.Half of 52 =
  14. 14.Half of 34 =
  15. 15.Double 82 =
  16. 16.Double 53 =
  17. 17.Double 18 =
  18. 18.Half of 16 =
  19. 19.Half of 164 =
  20. 20.Double 32 =
  21. 21.Double 14 =
  22. 22.Half of 182 =
  23. 23.Half of 148 =
  24. 24.Double 41 =
  25. 25.Double 68 =
  26. 26.Double 38 =
  27. 27.Double 74 =
  28. 28.Double 51 =
  29. 29.Double 21 =
  30. 30.Half of 116 =
  31. 31.Half of 152 =
  32. 32.Half of 102 =
  33. 33.Double 77 =
  34. 34.Double 46 =
  35. 35.Double 45 =
  36. 36.Half of 196 =
  37. 37.Double 47 =
  38. 38.Half of 124 =
  39. 39.Double 33 =
  40. 40.Half of 64 =

Answer key

  1. 162
  2. 48
  3. 72
  4. 59
  5. 62
  6. 58
  7. 66
  8. 86
  9. 21
  10. 54
  11. 114
  12. 71
  13. 26
  14. 17
  15. 164
  16. 106
  17. 36
  18. 8
  19. 82
  20. 64
  21. 28
  22. 91
  23. 74
  24. 82
  25. 136
  26. 76
  27. 148
  28. 102
  29. 42
  30. 58
  31. 76
  32. 51
  33. 154
  34. 92
  35. 90
  36. 98
  37. 94
  38. 62
  39. 66
  40. 32

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