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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 422 · 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 31 =
  2. 2.Double 81 =
  3. 3.Half of 72 =
  4. 4.Half of 28 =
  5. 5.Double 85 =
  6. 6.Half of 106 =
  7. 7.Half of 152 =
  8. 8.Double 71 =
  9. 9.Half of 194 =
  10. 10.Half of 64 =
  11. 11.Half of 144 =
  12. 12.Half of 62 =
  13. 13.Half of 82 =
  14. 14.Half of 146 =
  15. 15.Half of 42 =
  16. 16.Half of 36 =
  17. 17.Double 67 =
  18. 18.Double 63 =
  19. 19.Half of 184 =
  20. 20.Half of 162 =
  21. 21.Half of 34 =
  22. 22.Half of 54 =
  23. 23.Double 14 =
  24. 24.Half of 154 =
  25. 25.Double 16 =
  26. 26.Half of 172 =
  27. 27.Double 41 =
  28. 28.Double 28 =
  29. 29.Double 13 =
  30. 30.Double 92 =
  31. 31.Double 32 =
  32. 32.Double 91 =
  33. 33.Double 35 =
  34. 34.Half of 186 =
  35. 35.Double 57 =
  36. 36.Double 25 =
  37. 37.Double 89 =
  38. 38.Half of 148 =
  39. 39.Double 22 =
  40. 40.Half of 192 =

Answer key

  1. 62
  2. 162
  3. 36
  4. 14
  5. 170
  6. 53
  7. 76
  8. 142
  9. 97
  10. 32
  11. 72
  12. 31
  13. 41
  14. 73
  15. 21
  16. 18
  17. 134
  18. 126
  19. 92
  20. 81
  21. 17
  22. 27
  23. 28
  24. 77
  25. 32
  26. 86
  27. 82
  28. 56
  29. 26
  30. 184
  31. 64
  32. 182
  33. 70
  34. 93
  35. 114
  36. 50
  37. 178
  38. 74
  39. 44
  40. 96

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