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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 133 · 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 25 =
  2. 2.Half of 162 =
  3. 3.Double 48 =
  4. 4.Half of 158 =
  5. 5.Double 62 =
  6. 6.Half of 94 =
  7. 7.Double 82 =
  8. 8.Double 67 =
  9. 9.Double 24 =
  10. 10.Double 63 =
  11. 11.Half of 58 =
  12. 12.Double 26 =
  13. 13.Double 17 =
  14. 14.Double 45 =
  15. 15.Double 77 =
  16. 16.Double 15 =
  17. 17.Double 47 =
  18. 18.Double 31 =
  19. 19.Half of 24 =
  20. 20.Double 27 =
  21. 21.Double 38 =
  22. 22.Double 78 =
  23. 23.Double 28 =
  24. 24.Double 51 =
  25. 25.Double 64 =
  26. 26.Half of 78 =
  27. 27.Half of 152 =
  28. 28.Half of 72 =
  29. 29.Double 99 =
  30. 30.Half of 46 =
  31. 31.Half of 118 =
  32. 32.Double 81 =
  33. 33.Double 94 =
  34. 34.Double 89 =
  35. 35.Double 57 =
  36. 36.Half of 198 =
  37. 37.Double 72 =
  38. 38.Half of 52 =
  39. 39.Half of 114 =
  40. 40.Half of 92 =

Answer key

  1. 50
  2. 81
  3. 96
  4. 79
  5. 124
  6. 47
  7. 164
  8. 134
  9. 48
  10. 126
  11. 29
  12. 52
  13. 34
  14. 90
  15. 154
  16. 30
  17. 94
  18. 62
  19. 12
  20. 54
  21. 76
  22. 156
  23. 56
  24. 102
  25. 128
  26. 39
  27. 76
  28. 36
  29. 198
  30. 23
  31. 59
  32. 162
  33. 188
  34. 178
  35. 114
  36. 99
  37. 144
  38. 26
  39. 57
  40. 46

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