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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 87 · 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 23 =
  2. 2.Half of 46 =
  3. 3.Double 61 =
  4. 4.Double 58 =
  5. 5.Half of 82 =
  6. 6.Double 26 =
  7. 7.Double 81 =
  8. 8.Half of 34 =
  9. 9.Half of 52 =
  10. 10.Double 33 =
  11. 11.Double 86 =
  12. 12.Double 54 =
  13. 13.Half of 182 =
  14. 14.Double 68 =
  15. 15.Double 28 =
  16. 16.Half of 146 =
  17. 17.Half of 74 =
  18. 18.Half of 112 =
  19. 19.Half of 162 =
  20. 20.Double 57 =
  21. 21.Double 44 =
  22. 22.Double 76 =
  23. 23.Double 59 =
  24. 24.Double 98 =
  25. 25.Half of 106 =
  26. 26.Half of 22 =
  27. 27.Double 32 =
  28. 28.Half of 198 =
  29. 29.Half of 124 =
  30. 30.Double 31 =
  31. 31.Double 12 =
  32. 32.Half of 128 =
  33. 33.Double 77 =
  34. 34.Double 75 =
  35. 35.Double 29 =
  36. 36.Double 15 =
  37. 37.Half of 98 =
  38. 38.Double 41 =
  39. 39.Double 91 =
  40. 40.Half of 176 =

Answer key

  1. 46
  2. 23
  3. 122
  4. 116
  5. 41
  6. 52
  7. 162
  8. 17
  9. 26
  10. 66
  11. 172
  12. 108
  13. 91
  14. 136
  15. 56
  16. 73
  17. 37
  18. 56
  19. 81
  20. 114
  21. 88
  22. 152
  23. 118
  24. 196
  25. 53
  26. 11
  27. 64
  28. 99
  29. 62
  30. 62
  31. 24
  32. 64
  33. 154
  34. 150
  35. 58
  36. 30
  37. 49
  38. 82
  39. 182
  40. 88

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