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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 839 · 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 22 =
  2. 2.Half of 132 =
  3. 3.Half of 82 =
  4. 4.Half of 16 =
  5. 5.Double 73 =
  6. 6.Double 91 =
  7. 7.Double 49 =
  8. 8.Double 81 =
  9. 9.Half of 146 =
  10. 10.Half of 152 =
  11. 11.Half of 194 =
  12. 12.Half of 92 =
  13. 13.Double 26 =
  14. 14.Half of 116 =
  15. 15.Half of 14 =
  16. 16.Half of 24 =
  17. 17.Half of 122 =
  18. 18.Half of 192 =
  19. 19.Double 46 =
  20. 20.Half of 98 =
  21. 21.Half of 184 =
  22. 22.Double 56 =
  23. 23.Double 51 =
  24. 24.Double 71 =
  25. 25.Double 76 =
  26. 26.Half of 104 =
  27. 27.Double 24 =
  28. 28.Half of 84 =
  29. 29.Double 36 =
  30. 30.Half of 156 =
  31. 31.Half of 138 =
  32. 32.Double 52 =
  33. 33.Double 18 =
  34. 34.Half of 188 =
  35. 35.Half of 68 =
  36. 36.Double 31 =
  37. 37.Half of 52 =
  38. 38.Half of 72 =
  39. 39.Double 84 =
  40. 40.Half of 178 =

Answer key

  1. 44
  2. 66
  3. 41
  4. 8
  5. 146
  6. 182
  7. 98
  8. 162
  9. 73
  10. 76
  11. 97
  12. 46
  13. 52
  14. 58
  15. 7
  16. 12
  17. 61
  18. 96
  19. 92
  20. 49
  21. 92
  22. 112
  23. 102
  24. 142
  25. 152
  26. 52
  27. 48
  28. 42
  29. 72
  30. 78
  31. 69
  32. 104
  33. 36
  34. 94
  35. 34
  36. 62
  37. 26
  38. 36
  39. 168
  40. 89

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