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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 82 · 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 34 =
  2. 2.Half of 128 =
  3. 3.Half of 56 =
  4. 4.Half of 158 =
  5. 5.Half of 188 =
  6. 6.Half of 92 =
  7. 7.Double 12 =
  8. 8.Half of 164 =
  9. 9.Double 31 =
  10. 10.Double 11 =
  11. 11.Half of 62 =
  12. 12.Half of 24 =
  13. 13.Double 84 =
  14. 14.Double 56 =
  15. 15.Double 33 =
  16. 16.Double 76 =
  17. 17.Half of 152 =
  18. 18.Half of 154 =
  19. 19.Half of 28 =
  20. 20.Half of 12 =
  21. 21.Half of 48 =
  22. 22.Half of 42 =
  23. 23.Double 42 =
  24. 24.Double 37 =
  25. 25.Half of 82 =
  26. 26.Half of 44 =
  27. 27.Double 58 =
  28. 28.Double 85 =
  29. 29.Double 39 =
  30. 30.Double 23 =
  31. 31.Double 91 =
  32. 32.Double 26 =
  33. 33.Double 35 =
  34. 34.Half of 132 =
  35. 35.Double 92 =
  36. 36.Half of 142 =
  37. 37.Half of 18 =
  38. 38.Half of 162 =
  39. 39.Half of 66 =
  40. 40.Double 81 =

Answer key

  1. 17
  2. 64
  3. 28
  4. 79
  5. 94
  6. 46
  7. 24
  8. 82
  9. 62
  10. 22
  11. 31
  12. 12
  13. 168
  14. 112
  15. 66
  16. 152
  17. 76
  18. 77
  19. 14
  20. 6
  21. 24
  22. 21
  23. 84
  24. 74
  25. 41
  26. 22
  27. 116
  28. 170
  29. 78
  30. 46
  31. 182
  32. 52
  33. 70
  34. 66
  35. 184
  36. 71
  37. 9
  38. 81
  39. 33
  40. 162

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