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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 248 · 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 12 =
  2. 2.Half of 106 =
  3. 3.Half of 108 =
  4. 4.Half of 122 =
  5. 5.Half of 174 =
  6. 6.Half of 32 =
  7. 7.Double 99 =
  8. 8.Half of 62 =
  9. 9.Double 32 =
  10. 10.Half of 66 =
  11. 11.Double 57 =
  12. 12.Double 54 =
  13. 13.Double 79 =
  14. 14.Half of 102 =
  15. 15.Double 55 =
  16. 16.Half of 154 =
  17. 17.Double 14 =
  18. 18.Half of 14 =
  19. 19.Double 74 =
  20. 20.Half of 164 =
  21. 21.Half of 36 =
  22. 22.Half of 64 =
  23. 23.Half of 196 =
  24. 24.Double 71 =
  25. 25.Half of 118 =
  26. 26.Double 85 =
  27. 27.Double 51 =
  28. 28.Double 19 =
  29. 29.Double 41 =
  30. 30.Double 36 =
  31. 31.Half of 42 =
  32. 32.Double 27 =
  33. 33.Double 77 =
  34. 34.Half of 176 =
  35. 35.Half of 88 =
  36. 36.Double 37 =
  37. 37.Double 64 =
  38. 38.Half of 192 =
  39. 39.Double 75 =
  40. 40.Double 81 =

Answer key

  1. 6
  2. 53
  3. 54
  4. 61
  5. 87
  6. 16
  7. 198
  8. 31
  9. 64
  10. 33
  11. 114
  12. 108
  13. 158
  14. 51
  15. 110
  16. 77
  17. 28
  18. 7
  19. 148
  20. 82
  21. 18
  22. 32
  23. 98
  24. 142
  25. 59
  26. 170
  27. 102
  28. 38
  29. 82
  30. 72
  31. 21
  32. 54
  33. 154
  34. 88
  35. 44
  36. 74
  37. 128
  38. 96
  39. 150
  40. 162

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