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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 738 · 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 42 =
  2. 2.Half of 24 =
  3. 3.Half of 46 =
  4. 4.Double 55 =
  5. 5.Half of 72 =
  6. 6.Half of 52 =
  7. 7.Double 31 =
  8. 8.Half of 112 =
  9. 9.Double 68 =
  10. 10.Double 67 =
  11. 11.Double 58 =
  12. 12.Double 32 =
  13. 13.Double 63 =
  14. 14.Half of 118 =
  15. 15.Half of 178 =
  16. 16.Double 79 =
  17. 17.Double 17 =
  18. 18.Half of 76 =
  19. 19.Double 18 =
  20. 20.Half of 22 =
  21. 21.Double 45 =
  22. 22.Double 56 =
  23. 23.Half of 38 =
  24. 24.Double 91 =
  25. 25.Double 72 =
  26. 26.Double 82 =
  27. 27.Double 94 =
  28. 28.Half of 158 =
  29. 29.Half of 36 =
  30. 30.Double 39 =
  31. 31.Double 66 =
  32. 32.Half of 88 =
  33. 33.Double 95 =
  34. 34.Double 71 =
  35. 35.Double 46 =
  36. 36.Double 19 =
  37. 37.Half of 166 =
  38. 38.Double 59 =
  39. 39.Half of 152 =
  40. 40.Half of 28 =

Answer key

  1. 21
  2. 12
  3. 23
  4. 110
  5. 36
  6. 26
  7. 62
  8. 56
  9. 136
  10. 134
  11. 116
  12. 64
  13. 126
  14. 59
  15. 89
  16. 158
  17. 34
  18. 38
  19. 36
  20. 11
  21. 90
  22. 112
  23. 19
  24. 182
  25. 144
  26. 164
  27. 188
  28. 79
  29. 18
  30. 78
  31. 132
  32. 44
  33. 190
  34. 142
  35. 92
  36. 38
  37. 83
  38. 118
  39. 76
  40. 14

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