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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 728 · 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 24 =
  2. 2.Double 82 =
  3. 3.Double 65 =
  4. 4.Half of 172 =
  5. 5.Half of 136 =
  6. 6.Double 78 =
  7. 7.Double 13 =
  8. 8.Double 67 =
  9. 9.Double 23 =
  10. 10.Half of 22 =
  11. 11.Double 77 =
  12. 12.Half of 52 =
  13. 13.Double 21 =
  14. 14.Half of 36 =
  15. 15.Half of 44 =
  16. 16.Double 43 =
  17. 17.Double 15 =
  18. 18.Half of 164 =
  19. 19.Half of 46 =
  20. 20.Double 18 =
  21. 21.Half of 142 =
  22. 22.Double 68 =
  23. 23.Double 54 =
  24. 24.Double 29 =
  25. 25.Double 12 =
  26. 26.Half of 12 =
  27. 27.Double 85 =
  28. 28.Half of 82 =
  29. 29.Double 55 =
  30. 30.Half of 32 =
  31. 31.Double 58 =
  32. 32.Half of 58 =
  33. 33.Half of 196 =
  34. 34.Double 59 =
  35. 35.Double 96 =
  36. 36.Half of 92 =
  37. 37.Half of 16 =
  38. 38.Double 92 =
  39. 39.Double 83 =
  40. 40.Half of 182 =

Answer key

  1. 12
  2. 164
  3. 130
  4. 86
  5. 68
  6. 156
  7. 26
  8. 134
  9. 46
  10. 11
  11. 154
  12. 26
  13. 42
  14. 18
  15. 22
  16. 86
  17. 30
  18. 82
  19. 23
  20. 36
  21. 71
  22. 136
  23. 108
  24. 58
  25. 24
  26. 6
  27. 170
  28. 41
  29. 110
  30. 16
  31. 116
  32. 29
  33. 98
  34. 118
  35. 192
  36. 46
  37. 8
  38. 184
  39. 166
  40. 91

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