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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 727 · 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 176 =
  2. 2.Double 12 =
  3. 3.Double 39 =
  4. 4.Half of 34 =
  5. 5.Double 47 =
  6. 6.Half of 46 =
  7. 7.Half of 62 =
  8. 8.Double 51 =
  9. 9.Double 57 =
  10. 10.Half of 28 =
  11. 11.Half of 166 =
  12. 12.Double 24 =
  13. 13.Half of 148 =
  14. 14.Double 36 =
  15. 15.Half of 168 =
  16. 16.Double 77 =
  17. 17.Half of 48 =
  18. 18.Double 91 =
  19. 19.Double 26 =
  20. 20.Half of 66 =
  21. 21.Double 68 =
  22. 22.Half of 54 =
  23. 23.Double 31 =
  24. 24.Half of 132 =
  25. 25.Half of 154 =
  26. 26.Double 13 =
  27. 27.Half of 92 =
  28. 28.Half of 64 =
  29. 29.Double 42 =
  30. 30.Double 37 =
  31. 31.Half of 38 =
  32. 32.Double 17 =
  33. 33.Double 32 =
  34. 34.Half of 126 =
  35. 35.Double 79 =
  36. 36.Half of 14 =
  37. 37.Double 29 =
  38. 38.Double 44 =
  39. 39.Half of 178 =
  40. 40.Half of 16 =

Answer key

  1. 88
  2. 24
  3. 78
  4. 17
  5. 94
  6. 23
  7. 31
  8. 102
  9. 114
  10. 14
  11. 83
  12. 48
  13. 74
  14. 72
  15. 84
  16. 154
  17. 24
  18. 182
  19. 52
  20. 33
  21. 136
  22. 27
  23. 62
  24. 66
  25. 77
  26. 26
  27. 46
  28. 32
  29. 84
  30. 74
  31. 19
  32. 34
  33. 64
  34. 63
  35. 158
  36. 7
  37. 58
  38. 88
  39. 89
  40. 8

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