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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 255 · 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 88 =
  2. 2.Double 83 =
  3. 3.Half of 164 =
  4. 4.Half of 112 =
  5. 5.Double 38 =
  6. 6.Half of 182 =
  7. 7.Double 97 =
  8. 8.Half of 156 =
  9. 9.Half of 144 =
  10. 10.Half of 174 =
  11. 11.Double 93 =
  12. 12.Double 79 =
  13. 13.Double 35 =
  14. 14.Half of 138 =
  15. 15.Double 71 =
  16. 16.Double 29 =
  17. 17.Half of 188 =
  18. 18.Half of 22 =
  19. 19.Double 41 =
  20. 20.Double 14 =
  21. 21.Double 67 =
  22. 22.Double 15 =
  23. 23.Half of 78 =
  24. 24.Double 69 =
  25. 25.Double 54 =
  26. 26.Half of 132 =
  27. 27.Double 51 =
  28. 28.Double 12 =
  29. 29.Double 46 =
  30. 30.Half of 122 =
  31. 31.Double 81 =
  32. 32.Double 36 =
  33. 33.Double 25 =
  34. 34.Half of 84 =
  35. 35.Half of 52 =
  36. 36.Half of 28 =
  37. 37.Double 74 =
  38. 38.Double 94 =
  39. 39.Half of 126 =
  40. 40.Double 16 =

Answer key

  1. 44
  2. 166
  3. 82
  4. 56
  5. 76
  6. 91
  7. 194
  8. 78
  9. 72
  10. 87
  11. 186
  12. 158
  13. 70
  14. 69
  15. 142
  16. 58
  17. 94
  18. 11
  19. 82
  20. 28
  21. 134
  22. 30
  23. 39
  24. 138
  25. 108
  26. 66
  27. 102
  28. 24
  29. 92
  30. 61
  31. 162
  32. 72
  33. 50
  34. 42
  35. 26
  36. 14
  37. 148
  38. 188
  39. 63
  40. 32

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