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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 247 · 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 14 =
  2. 2.Double 82 =
  3. 3.Double 25 =
  4. 4.Half of 68 =
  5. 5.Half of 182 =
  6. 6.Half of 46 =
  7. 7.Half of 32 =
  8. 8.Half of 108 =
  9. 9.Double 91 =
  10. 10.Double 85 =
  11. 11.Double 41 =
  12. 12.Half of 178 =
  13. 13.Half of 52 =
  14. 14.Half of 142 =
  15. 15.Double 35 =
  16. 16.Half of 156 =
  17. 17.Half of 152 =
  18. 18.Half of 126 =
  19. 19.Double 14 =
  20. 20.Double 11 =
  21. 21.Double 51 =
  22. 22.Double 19 =
  23. 23.Double 34 =
  24. 24.Double 28 =
  25. 25.Half of 42 =
  26. 26.Half of 22 =
  27. 27.Half of 78 =
  28. 28.Half of 62 =
  29. 29.Double 57 =
  30. 30.Double 87 =
  31. 31.Half of 112 =
  32. 32.Double 23 =
  33. 33.Half of 16 =
  34. 34.Half of 72 =
  35. 35.Half of 158 =
  36. 36.Half of 76 =
  37. 37.Double 58 =
  38. 38.Half of 128 =
  39. 39.Half of 96 =
  40. 40.Double 24 =

Answer key

  1. 7
  2. 164
  3. 50
  4. 34
  5. 91
  6. 23
  7. 16
  8. 54
  9. 182
  10. 170
  11. 82
  12. 89
  13. 26
  14. 71
  15. 70
  16. 78
  17. 76
  18. 63
  19. 28
  20. 22
  21. 102
  22. 38
  23. 68
  24. 56
  25. 21
  26. 11
  27. 39
  28. 31
  29. 114
  30. 174
  31. 56
  32. 46
  33. 8
  34. 36
  35. 79
  36. 38
  37. 116
  38. 64
  39. 48
  40. 48

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