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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 618 · 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 152 =
  2. 2.Half of 22 =
  3. 3.Half of 64 =
  4. 4.Double 29 =
  5. 5.Half of 172 =
  6. 6.Double 91 =
  7. 7.Half of 38 =
  8. 8.Double 95 =
  9. 9.Double 72 =
  10. 10.Double 97 =
  11. 11.Double 63 =
  12. 12.Double 27 =
  13. 13.Half of 88 =
  14. 14.Double 12 =
  15. 15.Half of 118 =
  16. 16.Double 66 =
  17. 17.Double 62 =
  18. 18.Half of 84 =
  19. 19.Half of 82 =
  20. 20.Half of 186 =
  21. 21.Half of 48 =
  22. 22.Double 83 =
  23. 23.Half of 142 =
  24. 24.Double 86 =
  25. 25.Half of 144 =
  26. 26.Half of 86 =
  27. 27.Double 36 =
  28. 28.Half of 56 =
  29. 29.Half of 156 =
  30. 30.Double 71 =
  31. 31.Half of 66 =
  32. 32.Half of 62 =
  33. 33.Double 31 =
  34. 34.Double 81 =
  35. 35.Double 51 =
  36. 36.Half of 58 =
  37. 37.Double 14 =
  38. 38.Double 73 =
  39. 39.Double 43 =
  40. 40.Half of 182 =

Answer key

  1. 76
  2. 11
  3. 32
  4. 58
  5. 86
  6. 182
  7. 19
  8. 190
  9. 144
  10. 194
  11. 126
  12. 54
  13. 44
  14. 24
  15. 59
  16. 132
  17. 124
  18. 42
  19. 41
  20. 93
  21. 24
  22. 166
  23. 71
  24. 172
  25. 72
  26. 43
  27. 72
  28. 28
  29. 78
  30. 142
  31. 33
  32. 31
  33. 62
  34. 162
  35. 102
  36. 29
  37. 28
  38. 146
  39. 86
  40. 91

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