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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 520 · 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 43 =
  2. 2.Half of 58 =
  3. 3.Double 68 =
  4. 4.Half of 144 =
  5. 5.Double 33 =
  6. 6.Half of 96 =
  7. 7.Double 34 =
  8. 8.Half of 198 =
  9. 9.Double 71 =
  10. 10.Half of 24 =
  11. 11.Half of 52 =
  12. 12.Double 79 =
  13. 13.Double 11 =
  14. 14.Half of 74 =
  15. 15.Half of 42 =
  16. 16.Double 69 =
  17. 17.Double 61 =
  18. 18.Half of 26 =
  19. 19.Half of 102 =
  20. 20.Half of 98 =
  21. 21.Half of 182 =
  22. 22.Half of 18 =
  23. 23.Double 74 =
  24. 24.Double 23 =
  25. 25.Half of 132 =
  26. 26.Half of 32 =
  27. 27.Half of 178 =
  28. 28.Double 37 =
  29. 29.Double 15 =
  30. 30.Double 36 =
  31. 31.Double 21 =
  32. 32.Double 32 =
  33. 33.Double 91 =
  34. 34.Half of 66 =
  35. 35.Half of 122 =
  36. 36.Double 38 =
  37. 37.Double 67 =
  38. 38.Double 81 =
  39. 39.Half of 82 =
  40. 40.Double 86 =

Answer key

  1. 86
  2. 29
  3. 136
  4. 72
  5. 66
  6. 48
  7. 68
  8. 99
  9. 142
  10. 12
  11. 26
  12. 158
  13. 22
  14. 37
  15. 21
  16. 138
  17. 122
  18. 13
  19. 51
  20. 49
  21. 91
  22. 9
  23. 148
  24. 46
  25. 66
  26. 16
  27. 89
  28. 74
  29. 30
  30. 72
  31. 42
  32. 64
  33. 182
  34. 33
  35. 61
  36. 76
  37. 134
  38. 162
  39. 41
  40. 172

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