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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 703 · 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 178 =
  2. 2.Double 84 =
  3. 3.Double 18 =
  4. 4.Double 76 =
  5. 5.Half of 124 =
  6. 6.Half of 54 =
  7. 7.Half of 166 =
  8. 8.Double 36 =
  9. 9.Half of 154 =
  10. 10.Double 96 =
  11. 11.Half of 92 =
  12. 12.Half of 132 =
  13. 13.Half of 72 =
  14. 14.Double 71 =
  15. 15.Half of 36 =
  16. 16.Half of 52 =
  17. 17.Double 61 =
  18. 18.Double 55 =
  19. 19.Half of 184 =
  20. 20.Half of 46 =
  21. 21.Half of 58 =
  22. 22.Double 13 =
  23. 23.Double 19 =
  24. 24.Double 35 =
  25. 25.Half of 32 =
  26. 26.Half of 172 =
  27. 27.Half of 142 =
  28. 28.Half of 42 =
  29. 29.Half of 62 =
  30. 30.Double 25 =
  31. 31.Double 29 =
  32. 32.Double 69 =
  33. 33.Half of 152 =
  34. 34.Double 81 =
  35. 35.Double 46 =
  36. 36.Half of 82 =
  37. 37.Half of 86 =
  38. 38.Double 17 =
  39. 39.Double 26 =
  40. 40.Half of 66 =

Answer key

  1. 89
  2. 168
  3. 36
  4. 152
  5. 62
  6. 27
  7. 83
  8. 72
  9. 77
  10. 192
  11. 46
  12. 66
  13. 36
  14. 142
  15. 18
  16. 26
  17. 122
  18. 110
  19. 92
  20. 23
  21. 29
  22. 26
  23. 38
  24. 70
  25. 16
  26. 86
  27. 71
  28. 21
  29. 31
  30. 50
  31. 58
  32. 138
  33. 76
  34. 162
  35. 92
  36. 41
  37. 43
  38. 34
  39. 52
  40. 33

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