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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 564 · 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 172 =
  2. 2.Double 55 =
  3. 3.Half of 12 =
  4. 4.Half of 132 =
  5. 5.Half of 194 =
  6. 6.Half of 164 =
  7. 7.Double 81 =
  8. 8.Half of 174 =
  9. 9.Half of 182 =
  10. 10.Double 16 =
  11. 11.Half of 184 =
  12. 12.Double 54 =
  13. 13.Half of 84 =
  14. 14.Double 84 =
  15. 15.Double 44 =
  16. 16.Double 24 =
  17. 17.Double 91 =
  18. 18.Half of 158 =
  19. 19.Half of 32 =
  20. 20.Half of 42 =
  21. 21.Half of 122 =
  22. 22.Double 66 =
  23. 23.Half of 34 =
  24. 24.Double 36 =
  25. 25.Double 75 =
  26. 26.Half of 14 =
  27. 27.Double 21 =
  28. 28.Double 69 =
  29. 29.Half of 166 =
  30. 30.Double 14 =
  31. 31.Half of 146 =
  32. 32.Double 31 =
  33. 33.Double 32 =
  34. 34.Half of 198 =
  35. 35.Double 61 =
  36. 36.Double 62 =
  37. 37.Double 25 =
  38. 38.Half of 138 =
  39. 39.Half of 104 =
  40. 40.Half of 76 =

Answer key

  1. 86
  2. 110
  3. 6
  4. 66
  5. 97
  6. 82
  7. 162
  8. 87
  9. 91
  10. 32
  11. 92
  12. 108
  13. 42
  14. 168
  15. 88
  16. 48
  17. 182
  18. 79
  19. 16
  20. 21
  21. 61
  22. 132
  23. 17
  24. 72
  25. 150
  26. 7
  27. 42
  28. 138
  29. 83
  30. 28
  31. 73
  32. 62
  33. 64
  34. 99
  35. 122
  36. 124
  37. 50
  38. 69
  39. 52
  40. 38

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