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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 142 · 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.Double 91 =
  2. 2.Half of 116 =
  3. 3.Half of 22 =
  4. 4.Half of 98 =
  5. 5.Half of 24 =
  6. 6.Double 24 =
  7. 7.Half of 82 =
  8. 8.Half of 12 =
  9. 9.Half of 142 =
  10. 10.Double 26 =
  11. 11.Double 53 =
  12. 12.Double 41 =
  13. 13.Half of 182 =
  14. 14.Double 19 =
  15. 15.Double 45 =
  16. 16.Half of 172 =
  17. 17.Half of 92 =
  18. 18.Double 79 =
  19. 19.Double 22 =
  20. 20.Double 32 =
  21. 21.Double 35 =
  22. 22.Double 83 =
  23. 23.Double 11 =
  24. 24.Double 47 =
  25. 25.Half of 54 =
  26. 26.Half of 26 =
  27. 27.Double 81 =
  28. 28.Double 96 =
  29. 29.Half of 112 =
  30. 30.Half of 192 =
  31. 31.Double 57 =
  32. 32.Half of 68 =
  33. 33.Half of 166 =
  34. 34.Half of 42 =
  35. 35.Double 23 =
  36. 36.Half of 134 =
  37. 37.Half of 184 =
  38. 38.Double 39 =
  39. 39.Double 36 =
  40. 40.Double 37 =

Answer key

  1. 182
  2. 58
  3. 11
  4. 49
  5. 12
  6. 48
  7. 41
  8. 6
  9. 71
  10. 52
  11. 106
  12. 82
  13. 91
  14. 38
  15. 90
  16. 86
  17. 46
  18. 158
  19. 44
  20. 64
  21. 70
  22. 166
  23. 22
  24. 94
  25. 27
  26. 13
  27. 162
  28. 192
  29. 56
  30. 96
  31. 114
  32. 34
  33. 83
  34. 21
  35. 46
  36. 67
  37. 92
  38. 78
  39. 72
  40. 74

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