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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 472 · 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 84 =
  2. 2.Half of 52 =
  3. 3.Half of 58 =
  4. 4.Double 98 =
  5. 5.Half of 186 =
  6. 6.Double 78 =
  7. 7.Double 99 =
  8. 8.Half of 172 =
  9. 9.Half of 122 =
  10. 10.Half of 26 =
  11. 11.Half of 28 =
  12. 12.Double 42 =
  13. 13.Half of 132 =
  14. 14.Double 14 =
  15. 15.Double 86 =
  16. 16.Half of 136 =
  17. 17.Half of 34 =
  18. 18.Double 83 =
  19. 19.Double 28 =
  20. 20.Double 57 =
  21. 21.Double 79 =
  22. 22.Half of 14 =
  23. 23.Double 13 =
  24. 24.Half of 162 =
  25. 25.Double 23 =
  26. 26.Half of 62 =
  27. 27.Double 31 =
  28. 28.Half of 166 =
  29. 29.Half of 164 =
  30. 30.Double 17 =
  31. 31.Half of 158 =
  32. 32.Double 25 =
  33. 33.Double 58 =
  34. 34.Half of 68 =
  35. 35.Half of 92 =
  36. 36.Double 49 =
  37. 37.Half of 126 =
  38. 38.Double 61 =
  39. 39.Double 92 =
  40. 40.Double 52 =

Answer key

  1. 168
  2. 26
  3. 29
  4. 196
  5. 93
  6. 156
  7. 198
  8. 86
  9. 61
  10. 13
  11. 14
  12. 84
  13. 66
  14. 28
  15. 172
  16. 68
  17. 17
  18. 166
  19. 56
  20. 114
  21. 158
  22. 7
  23. 26
  24. 81
  25. 46
  26. 31
  27. 62
  28. 83
  29. 82
  30. 34
  31. 79
  32. 50
  33. 116
  34. 34
  35. 46
  36. 98
  37. 63
  38. 122
  39. 184
  40. 104

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