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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 677 · 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 56 =
  2. 2.Double 11 =
  3. 3.Half of 96 =
  4. 4.Double 34 =
  5. 5.Double 61 =
  6. 6.Double 41 =
  7. 7.Half of 44 =
  8. 8.Half of 172 =
  9. 9.Half of 38 =
  10. 10.Double 12 =
  11. 11.Double 31 =
  12. 12.Half of 102 =
  13. 13.Double 55 =
  14. 14.Half of 122 =
  15. 15.Half of 138 =
  16. 16.Half of 92 =
  17. 17.Double 35 =
  18. 18.Double 19 =
  19. 19.Half of 166 =
  20. 20.Half of 16 =
  21. 21.Double 33 =
  22. 22.Half of 68 =
  23. 23.Double 82 =
  24. 24.Double 88 =
  25. 25.Half of 48 =
  26. 26.Double 84 =
  27. 27.Half of 58 =
  28. 28.Half of 32 =
  29. 29.Double 26 =
  30. 30.Double 81 =
  31. 31.Half of 36 =
  32. 32.Double 44 =
  33. 33.Half of 42 =
  34. 34.Double 96 =
  35. 35.Double 67 =
  36. 36.Half of 12 =
  37. 37.Double 28 =
  38. 38.Half of 116 =
  39. 39.Double 51 =
  40. 40.Double 94 =

Answer key

  1. 28
  2. 22
  3. 48
  4. 68
  5. 122
  6. 82
  7. 22
  8. 86
  9. 19
  10. 24
  11. 62
  12. 51
  13. 110
  14. 61
  15. 69
  16. 46
  17. 70
  18. 38
  19. 83
  20. 8
  21. 66
  22. 34
  23. 164
  24. 176
  25. 24
  26. 168
  27. 29
  28. 16
  29. 52
  30. 162
  31. 18
  32. 88
  33. 21
  34. 192
  35. 134
  36. 6
  37. 56
  38. 58
  39. 102
  40. 188

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