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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 769 · 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 162 =
  2. 2.Half of 84 =
  3. 3.Double 14 =
  4. 4.Half of 26 =
  5. 5.Half of 134 =
  6. 6.Half of 166 =
  7. 7.Half of 52 =
  8. 8.Double 58 =
  9. 9.Double 45 =
  10. 10.Double 41 =
  11. 11.Double 29 =
  12. 12.Half of 48 =
  13. 13.Half of 148 =
  14. 14.Half of 32 =
  15. 15.Double 77 =
  16. 16.Double 59 =
  17. 17.Double 81 =
  18. 18.Double 69 =
  19. 19.Double 31 =
  20. 20.Half of 122 =
  21. 21.Half of 108 =
  22. 22.Double 98 =
  23. 23.Double 25 =
  24. 24.Double 36 =
  25. 25.Double 39 =
  26. 26.Half of 154 =
  27. 27.Half of 142 =
  28. 28.Half of 186 =
  29. 29.Double 88 =
  30. 30.Double 72 =
  31. 31.Double 87 =
  32. 32.Double 55 =
  33. 33.Half of 178 =
  34. 34.Double 66 =
  35. 35.Double 65 =
  36. 36.Half of 46 =
  37. 37.Half of 94 =
  38. 38.Double 12 =
  39. 39.Half of 14 =
  40. 40.Half of 106 =

Answer key

  1. 81
  2. 42
  3. 28
  4. 13
  5. 67
  6. 83
  7. 26
  8. 116
  9. 90
  10. 82
  11. 58
  12. 24
  13. 74
  14. 16
  15. 154
  16. 118
  17. 162
  18. 138
  19. 62
  20. 61
  21. 54
  22. 196
  23. 50
  24. 72
  25. 78
  26. 77
  27. 71
  28. 93
  29. 176
  30. 144
  31. 174
  32. 110
  33. 89
  34. 132
  35. 130
  36. 23
  37. 47
  38. 24
  39. 7
  40. 53

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