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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 781 · 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 182 =
  2. 2.Half of 88 =
  3. 3.Double 28 =
  4. 4.Double 23 =
  5. 5.Half of 18 =
  6. 6.Double 89 =
  7. 7.Double 49 =
  8. 8.Half of 22 =
  9. 9.Half of 104 =
  10. 10.Double 84 =
  11. 11.Double 27 =
  12. 12.Half of 32 =
  13. 13.Double 71 =
  14. 14.Double 99 =
  15. 15.Half of 44 =
  16. 16.Double 21 =
  17. 17.Half of 114 =
  18. 18.Double 26 =
  19. 19.Double 72 =
  20. 20.Half of 52 =
  21. 21.Half of 42 =
  22. 22.Double 86 =
  23. 23.Double 76 =
  24. 24.Half of 82 =
  25. 25.Double 13 =
  26. 26.Half of 74 =
  27. 27.Half of 72 =
  28. 28.Double 83 =
  29. 29.Half of 16 =
  30. 30.Double 25 =
  31. 31.Double 46 =
  32. 32.Double 35 =
  33. 33.Double 32 =
  34. 34.Double 75 =
  35. 35.Half of 86 =
  36. 36.Half of 192 =
  37. 37.Half of 142 =
  38. 38.Half of 116 =
  39. 39.Double 36 =
  40. 40.Half of 48 =

Answer key

  1. 91
  2. 44
  3. 56
  4. 46
  5. 9
  6. 178
  7. 98
  8. 11
  9. 52
  10. 168
  11. 54
  12. 16
  13. 142
  14. 198
  15. 22
  16. 42
  17. 57
  18. 52
  19. 144
  20. 26
  21. 21
  22. 172
  23. 152
  24. 41
  25. 26
  26. 37
  27. 36
  28. 166
  29. 8
  30. 50
  31. 92
  32. 70
  33. 64
  34. 150
  35. 43
  36. 96
  37. 71
  38. 58
  39. 72
  40. 24

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