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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 683 · 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 124 =
  2. 2.Half of 24 =
  3. 3.Double 21 =
  4. 4.Half of 54 =
  5. 5.Double 28 =
  6. 6.Half of 42 =
  7. 7.Half of 34 =
  8. 8.Half of 112 =
  9. 9.Double 31 =
  10. 10.Double 89 =
  11. 11.Double 16 =
  12. 12.Double 36 =
  13. 13.Half of 184 =
  14. 14.Half of 172 =
  15. 15.Double 51 =
  16. 16.Half of 88 =
  17. 17.Double 32 =
  18. 18.Double 93 =
  19. 19.Double 69 =
  20. 20.Half of 114 =
  21. 21.Double 29 =
  22. 22.Half of 166 =
  23. 23.Double 13 =
  24. 24.Half of 188 =
  25. 25.Half of 122 =
  26. 26.Double 65 =
  27. 27.Half of 168 =
  28. 28.Double 35 =
  29. 29.Double 79 =
  30. 30.Half of 102 =
  31. 31.Half of 46 =
  32. 32.Double 94 =
  33. 33.Half of 16 =
  34. 34.Half of 82 =
  35. 35.Double 91 =
  36. 36.Half of 162 =
  37. 37.Double 81 =
  38. 38.Double 37 =
  39. 39.Double 41 =
  40. 40.Half of 52 =

Answer key

  1. 62
  2. 12
  3. 42
  4. 27
  5. 56
  6. 21
  7. 17
  8. 56
  9. 62
  10. 178
  11. 32
  12. 72
  13. 92
  14. 86
  15. 102
  16. 44
  17. 64
  18. 186
  19. 138
  20. 57
  21. 58
  22. 83
  23. 26
  24. 94
  25. 61
  26. 130
  27. 84
  28. 70
  29. 158
  30. 51
  31. 23
  32. 188
  33. 8
  34. 41
  35. 182
  36. 81
  37. 162
  38. 74
  39. 82
  40. 26

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