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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 771 · 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 83 =
  2. 2.Half of 104 =
  3. 3.Half of 36 =
  4. 4.Half of 132 =
  5. 5.Double 18 =
  6. 6.Double 42 =
  7. 7.Half of 118 =
  8. 8.Half of 122 =
  9. 9.Double 56 =
  10. 10.Half of 84 =
  11. 11.Double 73 =
  12. 12.Half of 18 =
  13. 13.Double 54 =
  14. 14.Half of 168 =
  15. 15.Half of 152 =
  16. 16.Half of 78 =
  17. 17.Half of 154 =
  18. 18.Half of 162 =
  19. 19.Half of 166 =
  20. 20.Half of 196 =
  21. 21.Double 23 =
  22. 22.Half of 68 =
  23. 23.Half of 48 =
  24. 24.Half of 62 =
  25. 25.Half of 72 =
  26. 26.Half of 52 =
  27. 27.Double 59 =
  28. 28.Half of 92 =
  29. 29.Double 21 =
  30. 30.Half of 126 =
  31. 31.Double 47 =
  32. 32.Double 33 =
  33. 33.Double 87 =
  34. 34.Double 45 =
  35. 35.Half of 94 =
  36. 36.Half of 124 =
  37. 37.Half of 82 =
  38. 38.Double 19 =
  39. 39.Double 31 =
  40. 40.Double 22 =

Answer key

  1. 166
  2. 52
  3. 18
  4. 66
  5. 36
  6. 84
  7. 59
  8. 61
  9. 112
  10. 42
  11. 146
  12. 9
  13. 108
  14. 84
  15. 76
  16. 39
  17. 77
  18. 81
  19. 83
  20. 98
  21. 46
  22. 34
  23. 24
  24. 31
  25. 36
  26. 26
  27. 118
  28. 46
  29. 42
  30. 63
  31. 94
  32. 66
  33. 174
  34. 90
  35. 47
  36. 62
  37. 41
  38. 38
  39. 62
  40. 44

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