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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 596 · 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 17 =
  2. 2.Half of 192 =
  3. 3.Double 58 =
  4. 4.Double 99 =
  5. 5.Half of 72 =
  6. 6.Half of 16 =
  7. 7.Half of 186 =
  8. 8.Double 19 =
  9. 9.Double 32 =
  10. 10.Double 39 =
  11. 11.Half of 82 =
  12. 12.Double 49 =
  13. 13.Half of 154 =
  14. 14.Double 23 =
  15. 15.Double 61 =
  16. 16.Double 68 =
  17. 17.Half of 168 =
  18. 18.Double 66 =
  19. 19.Half of 58 =
  20. 20.Double 57 =
  21. 21.Double 95 =
  22. 22.Double 89 =
  23. 23.Double 91 =
  24. 24.Half of 126 =
  25. 25.Double 44 =
  26. 26.Double 71 =
  27. 27.Half of 94 =
  28. 28.Half of 188 =
  29. 29.Half of 76 =
  30. 30.Double 21 =
  31. 31.Half of 88 =
  32. 32.Half of 92 =
  33. 33.Half of 32 =
  34. 34.Half of 46 =
  35. 35.Double 64 =
  36. 36.Half of 166 =
  37. 37.Double 31 =
  38. 38.Double 34 =
  39. 39.Double 88 =
  40. 40.Double 65 =

Answer key

  1. 34
  2. 96
  3. 116
  4. 198
  5. 36
  6. 8
  7. 93
  8. 38
  9. 64
  10. 78
  11. 41
  12. 98
  13. 77
  14. 46
  15. 122
  16. 136
  17. 84
  18. 132
  19. 29
  20. 114
  21. 190
  22. 178
  23. 182
  24. 63
  25. 88
  26. 142
  27. 47
  28. 94
  29. 38
  30. 42
  31. 44
  32. 46
  33. 16
  34. 23
  35. 128
  36. 83
  37. 62
  38. 68
  39. 176
  40. 130

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