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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 605 · 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 58 =
  2. 2.Double 14 =
  3. 3.Double 66 =
  4. 4.Double 69 =
  5. 5.Double 78 =
  6. 6.Double 91 =
  7. 7.Double 12 =
  8. 8.Double 64 =
  9. 9.Double 95 =
  10. 10.Double 24 =
  11. 11.Double 65 =
  12. 12.Double 48 =
  13. 13.Half of 144 =
  14. 14.Half of 52 =
  15. 15.Double 44 =
  16. 16.Half of 72 =
  17. 17.Half of 62 =
  18. 18.Double 61 =
  19. 19.Double 31 =
  20. 20.Half of 122 =
  21. 21.Half of 32 =
  22. 22.Double 81 =
  23. 23.Double 83 =
  24. 24.Half of 124 =
  25. 25.Double 19 =
  26. 26.Half of 134 =
  27. 27.Double 28 =
  28. 28.Double 37 =
  29. 29.Double 13 =
  30. 30.Half of 126 =
  31. 31.Half of 42 =
  32. 32.Half of 44 =
  33. 33.Half of 28 =
  34. 34.Half of 88 =
  35. 35.Double 51 =
  36. 36.Double 27 =
  37. 37.Half of 76 =
  38. 38.Half of 158 =
  39. 39.Half of 162 =
  40. 40.Half of 16 =

Answer key

  1. 116
  2. 28
  3. 132
  4. 138
  5. 156
  6. 182
  7. 24
  8. 128
  9. 190
  10. 48
  11. 130
  12. 96
  13. 72
  14. 26
  15. 88
  16. 36
  17. 31
  18. 122
  19. 62
  20. 61
  21. 16
  22. 162
  23. 166
  24. 62
  25. 38
  26. 67
  27. 56
  28. 74
  29. 26
  30. 63
  31. 21
  32. 22
  33. 14
  34. 44
  35. 102
  36. 54
  37. 38
  38. 79
  39. 81
  40. 8

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