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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 113 · 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 148 =
  2. 2.Double 36 =
  3. 3.Half of 192 =
  4. 4.Half of 114 =
  5. 5.Half of 78 =
  6. 6.Double 97 =
  7. 7.Half of 168 =
  8. 8.Double 76 =
  9. 9.Half of 28 =
  10. 10.Double 37 =
  11. 11.Half of 92 =
  12. 12.Double 81 =
  13. 13.Double 68 =
  14. 14.Double 41 =
  15. 15.Half of 162 =
  16. 16.Half of 172 =
  17. 17.Half of 48 =
  18. 18.Half of 38 =
  19. 19.Double 77 =
  20. 20.Half of 152 =
  21. 21.Double 48 =
  22. 22.Half of 116 =
  23. 23.Double 19 =
  24. 24.Double 15 =
  25. 25.Double 56 =
  26. 26.Half of 194 =
  27. 27.Double 38 =
  28. 28.Double 11 =
  29. 29.Double 83 =
  30. 30.Double 49 =
  31. 31.Half of 142 =
  32. 32.Double 43 =
  33. 33.Half of 32 =
  34. 34.Double 18 =
  35. 35.Half of 82 =
  36. 36.Double 88 =
  37. 37.Double 14 =
  38. 38.Half of 166 =
  39. 39.Double 92 =
  40. 40.Double 54 =

Answer key

  1. 74
  2. 72
  3. 96
  4. 57
  5. 39
  6. 194
  7. 84
  8. 152
  9. 14
  10. 74
  11. 46
  12. 162
  13. 136
  14. 82
  15. 81
  16. 86
  17. 24
  18. 19
  19. 154
  20. 76
  21. 96
  22. 58
  23. 38
  24. 30
  25. 112
  26. 97
  27. 76
  28. 22
  29. 166
  30. 98
  31. 71
  32. 86
  33. 16
  34. 36
  35. 41
  36. 176
  37. 28
  38. 83
  39. 184
  40. 108

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