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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 3 · 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 166 =
  2. 2.Half of 54 =
  3. 3.Half of 28 =
  4. 4.Half of 52 =
  5. 5.Half of 82 =
  6. 6.Half of 92 =
  7. 7.Double 85 =
  8. 8.Half of 74 =
  9. 9.Half of 184 =
  10. 10.Half of 196 =
  11. 11.Half of 22 =
  12. 12.Double 55 =
  13. 13.Double 46 =
  14. 14.Double 78 =
  15. 15.Half of 172 =
  16. 16.Half of 156 =
  17. 17.Double 34 =
  18. 18.Double 28 =
  19. 19.Double 26 =
  20. 20.Double 89 =
  21. 21.Double 92 =
  22. 22.Half of 44 =
  23. 23.Double 42 =
  24. 24.Double 47 =
  25. 25.Double 29 =
  26. 26.Double 97 =
  27. 27.Half of 114 =
  28. 28.Half of 66 =
  29. 29.Half of 152 =
  30. 30.Double 81 =
  31. 31.Double 67 =
  32. 32.Half of 32 =
  33. 33.Half of 88 =
  34. 34.Half of 112 =
  35. 35.Half of 116 =
  36. 36.Double 84 =
  37. 37.Half of 18 =
  38. 38.Half of 142 =
  39. 39.Double 16 =
  40. 40.Half of 132 =

Answer key

  1. 83
  2. 27
  3. 14
  4. 26
  5. 41
  6. 46
  7. 170
  8. 37
  9. 92
  10. 98
  11. 11
  12. 110
  13. 92
  14. 156
  15. 86
  16. 78
  17. 68
  18. 56
  19. 52
  20. 178
  21. 184
  22. 22
  23. 84
  24. 94
  25. 58
  26. 194
  27. 57
  28. 33
  29. 76
  30. 162
  31. 134
  32. 16
  33. 44
  34. 56
  35. 58
  36. 168
  37. 9
  38. 71
  39. 32
  40. 66

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