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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 293 · 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 36 =
  2. 2.Half of 82 =
  3. 3.Half of 86 =
  4. 4.Half of 52 =
  5. 5.Double 86 =
  6. 6.Double 68 =
  7. 7.Half of 162 =
  8. 8.Double 66 =
  9. 9.Half of 24 =
  10. 10.Half of 114 =
  11. 11.Half of 64 =
  12. 12.Double 38 =
  13. 13.Half of 174 =
  14. 14.Double 31 =
  15. 15.Double 97 =
  16. 16.Half of 62 =
  17. 17.Double 13 =
  18. 18.Double 34 =
  19. 19.Half of 68 =
  20. 20.Double 21 =
  21. 21.Double 32 =
  22. 22.Half of 106 =
  23. 23.Half of 42 =
  24. 24.Double 42 =
  25. 25.Half of 44 =
  26. 26.Half of 26 =
  27. 27.Double 27 =
  28. 28.Double 77 =
  29. 29.Half of 92 =
  30. 30.Half of 186 =
  31. 31.Double 39 =
  32. 32.Half of 108 =
  33. 33.Half of 154 =
  34. 34.Half of 148 =
  35. 35.Double 53 =
  36. 36.Double 58 =
  37. 37.Half of 118 =
  38. 38.Half of 22 =
  39. 39.Double 55 =
  40. 40.Double 85 =

Answer key

  1. 72
  2. 41
  3. 43
  4. 26
  5. 172
  6. 136
  7. 81
  8. 132
  9. 12
  10. 57
  11. 32
  12. 76
  13. 87
  14. 62
  15. 194
  16. 31
  17. 26
  18. 68
  19. 34
  20. 42
  21. 64
  22. 53
  23. 21
  24. 84
  25. 22
  26. 13
  27. 54
  28. 154
  29. 46
  30. 93
  31. 78
  32. 54
  33. 77
  34. 74
  35. 106
  36. 116
  37. 59
  38. 11
  39. 110
  40. 170

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