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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 567 · 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 104 =
  2. 2.Half of 124 =
  3. 3.Half of 32 =
  4. 4.Half of 78 =
  5. 5.Half of 72 =
  6. 6.Half of 146 =
  7. 7.Double 42 =
  8. 8.Half of 68 =
  9. 9.Double 22 =
  10. 10.Half of 86 =
  11. 11.Double 11 =
  12. 12.Double 68 =
  13. 13.Half of 28 =
  14. 14.Half of 46 =
  15. 15.Half of 132 =
  16. 16.Double 38 =
  17. 17.Half of 172 =
  18. 18.Double 64 =
  19. 19.Double 89 =
  20. 20.Double 34 =
  21. 21.Double 94 =
  22. 22.Half of 62 =
  23. 23.Double 25 =
  24. 24.Double 54 =
  25. 25.Half of 26 =
  26. 26.Half of 174 =
  27. 27.Half of 148 =
  28. 28.Half of 152 =
  29. 29.Double 21 =
  30. 30.Double 79 =
  31. 31.Half of 196 =
  32. 32.Half of 116 =
  33. 33.Half of 52 =
  34. 34.Double 12 =
  35. 35.Double 44 =
  36. 36.Half of 66 =
  37. 37.Half of 82 =
  38. 38.Half of 106 =
  39. 39.Half of 42 =
  40. 40.Half of 34 =

Answer key

  1. 52
  2. 62
  3. 16
  4. 39
  5. 36
  6. 73
  7. 84
  8. 34
  9. 44
  10. 43
  11. 22
  12. 136
  13. 14
  14. 23
  15. 66
  16. 76
  17. 86
  18. 128
  19. 178
  20. 68
  21. 188
  22. 31
  23. 50
  24. 108
  25. 13
  26. 87
  27. 74
  28. 76
  29. 42
  30. 158
  31. 98
  32. 58
  33. 26
  34. 24
  35. 88
  36. 33
  37. 41
  38. 53
  39. 21
  40. 17

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