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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 431 · 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 57 =
  2. 2.Half of 144 =
  3. 3.Half of 12 =
  4. 4.Half of 52 =
  5. 5.Half of 134 =
  6. 6.Half of 164 =
  7. 7.Double 38 =
  8. 8.Half of 34 =
  9. 9.Half of 36 =
  10. 10.Double 24 =
  11. 11.Double 12 =
  12. 12.Half of 198 =
  13. 13.Half of 62 =
  14. 14.Double 61 =
  15. 15.Half of 22 =
  16. 16.Half of 188 =
  17. 17.Half of 128 =
  18. 18.Half of 96 =
  19. 19.Half of 182 =
  20. 20.Double 53 =
  21. 21.Double 41 =
  22. 22.Double 21 =
  23. 23.Double 91 =
  24. 24.Double 65 =
  25. 25.Double 81 =
  26. 26.Half of 72 =
  27. 27.Double 15 =
  28. 28.Double 66 =
  29. 29.Double 51 =
  30. 30.Half of 112 =
  31. 31.Double 32 =
  32. 32.Half of 194 =
  33. 33.Half of 94 =
  34. 34.Half of 18 =
  35. 35.Double 45 =
  36. 36.Double 96 =
  37. 37.Double 34 =
  38. 38.Double 64 =
  39. 39.Half of 92 =
  40. 40.Half of 98 =

Answer key

  1. 114
  2. 72
  3. 6
  4. 26
  5. 67
  6. 82
  7. 76
  8. 17
  9. 18
  10. 48
  11. 24
  12. 99
  13. 31
  14. 122
  15. 11
  16. 94
  17. 64
  18. 48
  19. 91
  20. 106
  21. 82
  22. 42
  23. 182
  24. 130
  25. 162
  26. 36
  27. 30
  28. 132
  29. 102
  30. 56
  31. 64
  32. 97
  33. 47
  34. 9
  35. 90
  36. 192
  37. 68
  38. 128
  39. 46
  40. 49

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