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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 733 · 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 18 =
  3. 3.Double 38 =
  4. 4.Half of 162 =
  5. 5.Half of 132 =
  6. 6.Half of 96 =
  7. 7.Half of 14 =
  8. 8.Half of 32 =
  9. 9.Double 51 =
  10. 10.Half of 44 =
  11. 11.Double 61 =
  12. 12.Half of 92 =
  13. 13.Half of 68 =
  14. 14.Double 58 =
  15. 15.Half of 84 =
  16. 16.Half of 134 =
  17. 17.Half of 82 =
  18. 18.Half of 36 =
  19. 19.Double 17 =
  20. 20.Half of 172 =
  21. 21.Half of 144 =
  22. 22.Half of 54 =
  23. 23.Double 48 =
  24. 24.Half of 38 =
  25. 25.Half of 136 =
  26. 26.Double 98 =
  27. 27.Half of 52 =
  28. 28.Double 93 =
  29. 29.Double 81 =
  30. 30.Half of 142 =
  31. 31.Double 66 =
  32. 32.Double 63 =
  33. 33.Double 22 =
  34. 34.Half of 138 =
  35. 35.Half of 12 =
  36. 36.Half of 62 =
  37. 37.Half of 28 =
  38. 38.Double 69 =
  39. 39.Double 21 =
  40. 40.Half of 122 =

Answer key

  1. 36
  2. 9
  3. 76
  4. 81
  5. 66
  6. 48
  7. 7
  8. 16
  9. 102
  10. 22
  11. 122
  12. 46
  13. 34
  14. 116
  15. 42
  16. 67
  17. 41
  18. 18
  19. 34
  20. 86
  21. 72
  22. 27
  23. 96
  24. 19
  25. 68
  26. 196
  27. 26
  28. 186
  29. 162
  30. 71
  31. 132
  32. 126
  33. 44
  34. 69
  35. 6
  36. 31
  37. 14
  38. 138
  39. 42
  40. 61

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