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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 188 · 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 62 =
  2. 2.Half of 152 =
  3. 3.Double 92 =
  4. 4.Half of 22 =
  5. 5.Double 46 =
  6. 6.Half of 72 =
  7. 7.Double 94 =
  8. 8.Half of 82 =
  9. 9.Double 25 =
  10. 10.Double 87 =
  11. 11.Double 26 =
  12. 12.Double 57 =
  13. 13.Double 68 =
  14. 14.Double 13 =
  15. 15.Double 67 =
  16. 16.Double 12 =
  17. 17.Double 21 =
  18. 18.Half of 18 =
  19. 19.Half of 156 =
  20. 20.Half of 28 =
  21. 21.Double 51 =
  22. 22.Half of 98 =
  23. 23.Double 41 =
  24. 24.Double 75 =
  25. 25.Half of 24 =
  26. 26.Double 18 =
  27. 27.Half of 62 =
  28. 28.Double 16 =
  29. 29.Half of 158 =
  30. 30.Double 65 =
  31. 31.Double 79 =
  32. 32.Double 54 =
  33. 33.Double 61 =
  34. 34.Double 29 =
  35. 35.Half of 38 =
  36. 36.Half of 154 =
  37. 37.Double 55 =
  38. 38.Double 22 =
  39. 39.Double 71 =
  40. 40.Double 33 =

Answer key

  1. 124
  2. 76
  3. 184
  4. 11
  5. 92
  6. 36
  7. 188
  8. 41
  9. 50
  10. 174
  11. 52
  12. 114
  13. 136
  14. 26
  15. 134
  16. 24
  17. 42
  18. 9
  19. 78
  20. 14
  21. 102
  22. 49
  23. 82
  24. 150
  25. 12
  26. 36
  27. 31
  28. 32
  29. 79
  30. 130
  31. 158
  32. 108
  33. 122
  34. 58
  35. 19
  36. 77
  37. 110
  38. 44
  39. 142
  40. 66

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