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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 42 · 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.Half of 62 =
  2. 2.Half of 78 =
  3. 3.Half of 46 =
  4. 4.Half of 42 =
  5. 5.Half of 48 =
  6. 6.Half of 104 =
  7. 7.Double 19 =
  8. 8.Half of 28 =
  9. 9.Half of 88 =
  10. 10.Double 32 =
  11. 11.Double 83 =
  12. 12.Double 49 =
  13. 13.Double 14 =
  14. 14.Half of 94 =
  15. 15.Double 52 =
  16. 16.Double 59 =
  17. 17.Double 82 =
  18. 18.Half of 58 =
  19. 19.Double 35 =
  20. 20.Double 67 =
  21. 21.Double 37 =
  22. 22.Double 18 =
  23. 23.Half of 66 =
  24. 24.Half of 184 =
  25. 25.Double 81 =
  26. 26.Double 46 =
  27. 27.Double 31 =
  28. 28.Half of 164 =
  29. 29.Double 51 =
  30. 30.Half of 24 =
  31. 31.Half of 192 =
  32. 32.Double 27 =
  33. 33.Half of 142 =
  34. 34.Double 36 =
  35. 35.Half of 18 =
  36. 36.Double 61 =
  37. 37.Double 25 =
  38. 38.Double 11 =
  39. 39.Double 71 =
  40. 40.Double 95 =

Answer key

  1. 31
  2. 39
  3. 23
  4. 21
  5. 24
  6. 52
  7. 38
  8. 14
  9. 44
  10. 64
  11. 166
  12. 98
  13. 28
  14. 47
  15. 104
  16. 118
  17. 164
  18. 29
  19. 70
  20. 134
  21. 74
  22. 36
  23. 33
  24. 92
  25. 162
  26. 92
  27. 62
  28. 82
  29. 102
  30. 12
  31. 96
  32. 54
  33. 71
  34. 72
  35. 9
  36. 122
  37. 50
  38. 22
  39. 142
  40. 190

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