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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 784 · 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 166 =
  2. 2.Double 27 =
  3. 3.Half of 108 =
  4. 4.Double 46 =
  5. 5.Half of 82 =
  6. 6.Double 85 =
  7. 7.Half of 42 =
  8. 8.Double 39 =
  9. 9.Double 53 =
  10. 10.Half of 118 =
  11. 11.Double 72 =
  12. 12.Half of 26 =
  13. 13.Half of 136 =
  14. 14.Half of 92 =
  15. 15.Half of 44 =
  16. 16.Double 31 =
  17. 17.Double 37 =
  18. 18.Half of 112 =
  19. 19.Double 69 =
  20. 20.Double 44 =
  21. 21.Double 32 =
  22. 22.Half of 36 =
  23. 23.Half of 102 =
  24. 24.Half of 128 =
  25. 25.Half of 96 =
  26. 26.Double 14 =
  27. 27.Double 57 =
  28. 28.Half of 72 =
  29. 29.Half of 172 =
  30. 30.Double 18 =
  31. 31.Double 61 =
  32. 32.Half of 114 =
  33. 33.Half of 78 =
  34. 34.Double 77 =
  35. 35.Half of 48 =
  36. 36.Half of 94 =
  37. 37.Double 54 =
  38. 38.Double 71 =
  39. 39.Half of 76 =
  40. 40.Half of 194 =

Answer key

  1. 83
  2. 54
  3. 54
  4. 92
  5. 41
  6. 170
  7. 21
  8. 78
  9. 106
  10. 59
  11. 144
  12. 13
  13. 68
  14. 46
  15. 22
  16. 62
  17. 74
  18. 56
  19. 138
  20. 88
  21. 64
  22. 18
  23. 51
  24. 64
  25. 48
  26. 28
  27. 114
  28. 36
  29. 86
  30. 36
  31. 122
  32. 57
  33. 39
  34. 154
  35. 24
  36. 47
  37. 108
  38. 142
  39. 38
  40. 97

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