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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 899 · 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 99 =
  2. 2.Half of 68 =
  3. 3.Half of 112 =
  4. 4.Half of 42 =
  5. 5.Double 16 =
  6. 6.Double 81 =
  7. 7.Half of 76 =
  8. 8.Half of 192 =
  9. 9.Double 55 =
  10. 10.Double 38 =
  11. 11.Half of 22 =
  12. 12.Double 21 =
  13. 13.Double 87 =
  14. 14.Double 59 =
  15. 15.Half of 172 =
  16. 16.Double 48 =
  17. 17.Half of 74 =
  18. 18.Half of 82 =
  19. 19.Half of 46 =
  20. 20.Double 13 =
  21. 21.Double 82 =
  22. 22.Double 22 =
  23. 23.Half of 118 =
  24. 24.Double 28 =
  25. 25.Double 75 =
  26. 26.Double 61 =
  27. 27.Double 66 =
  28. 28.Double 46 =
  29. 29.Half of 174 =
  30. 30.Double 54 =
  31. 31.Half of 26 =
  32. 32.Half of 162 =
  33. 33.Double 35 =
  34. 34.Double 18 =
  35. 35.Double 41 =
  36. 36.Half of 64 =
  37. 37.Double 32 =
  38. 38.Double 24 =
  39. 39.Half of 142 =
  40. 40.Double 52 =

Answer key

  1. 198
  2. 34
  3. 56
  4. 21
  5. 32
  6. 162
  7. 38
  8. 96
  9. 110
  10. 76
  11. 11
  12. 42
  13. 174
  14. 118
  15. 86
  16. 96
  17. 37
  18. 41
  19. 23
  20. 26
  21. 164
  22. 44
  23. 59
  24. 56
  25. 150
  26. 122
  27. 132
  28. 92
  29. 87
  30. 108
  31. 13
  32. 81
  33. 70
  34. 36
  35. 82
  36. 32
  37. 64
  38. 48
  39. 71
  40. 104

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