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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 381 · 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 134 =
  2. 2.Double 16 =
  3. 3.Double 82 =
  4. 4.Double 35 =
  5. 5.Half of 166 =
  6. 6.Double 41 =
  7. 7.Half of 176 =
  8. 8.Half of 116 =
  9. 9.Double 15 =
  10. 10.Double 53 =
  11. 11.Double 85 =
  12. 12.Double 91 =
  13. 13.Half of 28 =
  14. 14.Double 23 =
  15. 15.Double 88 =
  16. 16.Double 36 =
  17. 17.Double 58 =
  18. 18.Half of 36 =
  19. 19.Double 71 =
  20. 20.Half of 76 =
  21. 21.Half of 18 =
  22. 22.Half of 118 =
  23. 23.Half of 52 =
  24. 24.Double 28 =
  25. 25.Double 34 =
  26. 26.Double 75 =
  27. 27.Double 81 =
  28. 28.Half of 192 =
  29. 29.Half of 106 =
  30. 30.Double 84 =
  31. 31.Double 94 =
  32. 32.Double 54 =
  33. 33.Double 78 =
  34. 34.Half of 96 =
  35. 35.Half of 112 =
  36. 36.Half of 66 =
  37. 37.Double 14 =
  38. 38.Double 24 =
  39. 39.Half of 136 =
  40. 40.Double 22 =

Answer key

  1. 67
  2. 32
  3. 164
  4. 70
  5. 83
  6. 82
  7. 88
  8. 58
  9. 30
  10. 106
  11. 170
  12. 182
  13. 14
  14. 46
  15. 176
  16. 72
  17. 116
  18. 18
  19. 142
  20. 38
  21. 9
  22. 59
  23. 26
  24. 56
  25. 68
  26. 150
  27. 162
  28. 96
  29. 53
  30. 168
  31. 188
  32. 108
  33. 156
  34. 48
  35. 56
  36. 33
  37. 28
  38. 48
  39. 68
  40. 44

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