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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 8 · 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 23 =
  2. 2.Double 88 =
  3. 3.Half of 48 =
  4. 4.Half of 142 =
  5. 5.Half of 46 =
  6. 6.Half of 82 =
  7. 7.Half of 102 =
  8. 8.Double 81 =
  9. 9.Half of 136 =
  10. 10.Double 22 =
  11. 11.Double 57 =
  12. 12.Double 77 =
  13. 13.Double 68 =
  14. 14.Half of 26 =
  15. 15.Half of 28 =
  16. 16.Half of 22 =
  17. 17.Half of 38 =
  18. 18.Half of 34 =
  19. 19.Double 84 =
  20. 20.Double 41 =
  21. 21.Half of 138 =
  22. 22.Double 59 =
  23. 23.Double 63 =
  24. 24.Half of 118 =
  25. 25.Half of 88 =
  26. 26.Double 64 =
  27. 27.Double 37 =
  28. 28.Double 71 =
  29. 29.Half of 66 =
  30. 30.Half of 52 =
  31. 31.Double 36 =
  32. 32.Double 39 =
  33. 33.Double 53 =
  34. 34.Double 85 =
  35. 35.Half of 92 =
  36. 36.Double 43 =
  37. 37.Half of 132 =
  38. 38.Double 66 =
  39. 39.Double 12 =
  40. 40.Double 78 =

Answer key

  1. 46
  2. 176
  3. 24
  4. 71
  5. 23
  6. 41
  7. 51
  8. 162
  9. 68
  10. 44
  11. 114
  12. 154
  13. 136
  14. 13
  15. 14
  16. 11
  17. 19
  18. 17
  19. 168
  20. 82
  21. 69
  22. 118
  23. 126
  24. 59
  25. 44
  26. 128
  27. 74
  28. 142
  29. 33
  30. 26
  31. 72
  32. 78
  33. 106
  34. 170
  35. 46
  36. 86
  37. 66
  38. 132
  39. 24
  40. 156

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