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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 225 · 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 48 =
  2. 2.Half of 114 =
  3. 3.Double 49 =
  4. 4.Half of 108 =
  5. 5.Double 31 =
  6. 6.Half of 134 =
  7. 7.Half of 74 =
  8. 8.Double 81 =
  9. 9.Half of 22 =
  10. 10.Half of 62 =
  11. 11.Half of 162 =
  12. 12.Half of 46 =
  13. 13.Half of 82 =
  14. 14.Double 48 =
  15. 15.Half of 14 =
  16. 16.Double 69 =
  17. 17.Half of 72 =
  18. 18.Double 71 =
  19. 19.Half of 118 =
  20. 20.Double 39 =
  21. 21.Double 92 =
  22. 22.Half of 64 =
  23. 23.Double 89 =
  24. 24.Half of 184 =
  25. 25.Double 57 =
  26. 26.Double 32 =
  27. 27.Double 43 =
  28. 28.Double 25 =
  29. 29.Half of 172 =
  30. 30.Half of 186 =
  31. 31.Half of 146 =
  32. 32.Half of 66 =
  33. 33.Double 98 =
  34. 34.Half of 136 =
  35. 35.Double 87 =
  36. 36.Double 18 =
  37. 37.Double 93 =
  38. 38.Double 19 =
  39. 39.Double 42 =
  40. 40.Double 53 =

Answer key

  1. 24
  2. 57
  3. 98
  4. 54
  5. 62
  6. 67
  7. 37
  8. 162
  9. 11
  10. 31
  11. 81
  12. 23
  13. 41
  14. 96
  15. 7
  16. 138
  17. 36
  18. 142
  19. 59
  20. 78
  21. 184
  22. 32
  23. 178
  24. 92
  25. 114
  26. 64
  27. 86
  28. 50
  29. 86
  30. 93
  31. 73
  32. 33
  33. 196
  34. 68
  35. 174
  36. 36
  37. 186
  38. 38
  39. 84
  40. 106

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