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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 116 · 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 72 =
  2. 2.Half of 118 =
  3. 3.Double 52 =
  4. 4.Half of 192 =
  5. 5.Half of 62 =
  6. 6.Double 78 =
  7. 7.Half of 56 =
  8. 8.Half of 52 =
  9. 9.Half of 86 =
  10. 10.Double 83 =
  11. 11.Half of 182 =
  12. 12.Double 94 =
  13. 13.Double 41 =
  14. 14.Double 12 =
  15. 15.Double 72 =
  16. 16.Half of 104 =
  17. 17.Double 31 =
  18. 18.Double 81 =
  19. 19.Half of 114 =
  20. 20.Double 45 =
  21. 21.Double 95 =
  22. 22.Half of 38 =
  23. 23.Half of 168 =
  24. 24.Double 87 =
  25. 25.Double 58 =
  26. 26.Half of 176 =
  27. 27.Double 48 =
  28. 28.Half of 82 =
  29. 29.Half of 106 =
  30. 30.Half of 54 =
  31. 31.Half of 172 =
  32. 32.Double 15 =
  33. 33.Double 69 =
  34. 34.Half of 122 =
  35. 35.Double 99 =
  36. 36.Half of 112 =
  37. 37.Half of 138 =
  38. 38.Double 17 =
  39. 39.Double 42 =
  40. 40.Half of 24 =

Answer key

  1. 36
  2. 59
  3. 104
  4. 96
  5. 31
  6. 156
  7. 28
  8. 26
  9. 43
  10. 166
  11. 91
  12. 188
  13. 82
  14. 24
  15. 144
  16. 52
  17. 62
  18. 162
  19. 57
  20. 90
  21. 190
  22. 19
  23. 84
  24. 174
  25. 116
  26. 88
  27. 96
  28. 41
  29. 53
  30. 27
  31. 86
  32. 30
  33. 138
  34. 61
  35. 198
  36. 56
  37. 69
  38. 34
  39. 84
  40. 12

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