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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 201 · 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.Double 96 =
  2. 2.Half of 142 =
  3. 3.Double 12 =
  4. 4.Half of 12 =
  5. 5.Double 78 =
  6. 6.Half of 88 =
  7. 7.Half of 116 =
  8. 8.Half of 36 =
  9. 9.Half of 104 =
  10. 10.Double 71 =
  11. 11.Half of 158 =
  12. 12.Double 58 =
  13. 13.Half of 164 =
  14. 14.Half of 58 =
  15. 15.Double 76 =
  16. 16.Double 31 =
  17. 17.Double 77 =
  18. 18.Double 27 =
  19. 19.Double 59 =
  20. 20.Half of 172 =
  21. 21.Half of 16 =
  22. 22.Double 26 =
  23. 23.Double 61 =
  24. 24.Half of 86 =
  25. 25.Double 36 =
  26. 26.Double 89 =
  27. 27.Double 11 =
  28. 28.Half of 72 =
  29. 29.Half of 52 =
  30. 30.Double 48 =
  31. 31.Half of 112 =
  32. 32.Double 49 =
  33. 33.Half of 174 =
  34. 34.Double 47 =
  35. 35.Half of 114 =
  36. 36.Double 34 =
  37. 37.Half of 54 =
  38. 38.Double 98 =
  39. 39.Double 81 =
  40. 40.Double 69 =

Answer key

  1. 192
  2. 71
  3. 24
  4. 6
  5. 156
  6. 44
  7. 58
  8. 18
  9. 52
  10. 142
  11. 79
  12. 116
  13. 82
  14. 29
  15. 152
  16. 62
  17. 154
  18. 54
  19. 118
  20. 86
  21. 8
  22. 52
  23. 122
  24. 43
  25. 72
  26. 178
  27. 22
  28. 36
  29. 26
  30. 96
  31. 56
  32. 98
  33. 87
  34. 94
  35. 57
  36. 68
  37. 27
  38. 196
  39. 162
  40. 138

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