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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 684 · 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 58 =
  2. 2.Double 29 =
  3. 3.Half of 66 =
  4. 4.Half of 164 =
  5. 5.Half of 62 =
  6. 6.Double 25 =
  7. 7.Half of 152 =
  8. 8.Half of 12 =
  9. 9.Double 19 =
  10. 10.Double 26 =
  11. 11.Half of 42 =
  12. 12.Half of 172 =
  13. 13.Double 84 =
  14. 14.Half of 114 =
  15. 15.Double 82 =
  16. 16.Double 81 =
  17. 17.Double 48 =
  18. 18.Double 42 =
  19. 19.Half of 76 =
  20. 20.Double 72 =
  21. 21.Double 23 =
  22. 22.Double 43 =
  23. 23.Half of 36 =
  24. 24.Half of 174 =
  25. 25.Half of 106 =
  26. 26.Half of 188 =
  27. 27.Half of 182 =
  28. 28.Half of 144 =
  29. 29.Half of 28 =
  30. 30.Half of 192 =
  31. 31.Half of 104 =
  32. 32.Double 75 =
  33. 33.Double 18 =
  34. 34.Double 54 =
  35. 35.Half of 72 =
  36. 36.Double 68 =
  37. 37.Half of 166 =
  38. 38.Half of 132 =
  39. 39.Half of 136 =
  40. 40.Half of 198 =

Answer key

  1. 116
  2. 58
  3. 33
  4. 82
  5. 31
  6. 50
  7. 76
  8. 6
  9. 38
  10. 52
  11. 21
  12. 86
  13. 168
  14. 57
  15. 164
  16. 162
  17. 96
  18. 84
  19. 38
  20. 144
  21. 46
  22. 86
  23. 18
  24. 87
  25. 53
  26. 94
  27. 91
  28. 72
  29. 14
  30. 96
  31. 52
  32. 150
  33. 36
  34. 108
  35. 36
  36. 136
  37. 83
  38. 66
  39. 68
  40. 99

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