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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 283 · 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 162 =
  2. 2.Double 26 =
  3. 3.Half of 62 =
  4. 4.Half of 86 =
  5. 5.Half of 166 =
  6. 6.Half of 94 =
  7. 7.Double 72 =
  8. 8.Double 55 =
  9. 9.Double 13 =
  10. 10.Half of 54 =
  11. 11.Double 85 =
  12. 12.Half of 28 =
  13. 13.Half of 158 =
  14. 14.Half of 22 =
  15. 15.Half of 34 =
  16. 16.Double 35 =
  17. 17.Double 43 =
  18. 18.Double 92 =
  19. 19.Half of 82 =
  20. 20.Double 69 =
  21. 21.Double 41 =
  22. 22.Half of 58 =
  23. 23.Half of 38 =
  24. 24.Half of 188 =
  25. 25.Half of 168 =
  26. 26.Half of 126 =
  27. 27.Half of 52 =
  28. 28.Half of 128 =
  29. 29.Double 46 =
  30. 30.Half of 198 =
  31. 31.Double 12 =
  32. 32.Half of 108 =
  33. 33.Half of 124 =
  34. 34.Half of 114 =
  35. 35.Half of 88 =
  36. 36.Half of 106 =
  37. 37.Double 14 =
  38. 38.Double 82 =
  39. 39.Double 25 =
  40. 40.Half of 178 =

Answer key

  1. 81
  2. 52
  3. 31
  4. 43
  5. 83
  6. 47
  7. 144
  8. 110
  9. 26
  10. 27
  11. 170
  12. 14
  13. 79
  14. 11
  15. 17
  16. 70
  17. 86
  18. 184
  19. 41
  20. 138
  21. 82
  22. 29
  23. 19
  24. 94
  25. 84
  26. 63
  27. 26
  28. 64
  29. 92
  30. 99
  31. 24
  32. 54
  33. 62
  34. 57
  35. 44
  36. 53
  37. 28
  38. 164
  39. 50
  40. 89

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