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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 396 · 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 156 =
  2. 2.Double 54 =
  3. 3.Double 66 =
  4. 4.Half of 122 =
  5. 5.Half of 64 =
  6. 6.Half of 192 =
  7. 7.Double 29 =
  8. 8.Half of 44 =
  9. 9.Double 18 =
  10. 10.Double 52 =
  11. 11.Half of 102 =
  12. 12.Half of 74 =
  13. 13.Half of 54 =
  14. 14.Double 25 =
  15. 15.Half of 48 =
  16. 16.Double 16 =
  17. 17.Half of 162 =
  18. 18.Double 43 =
  19. 19.Half of 58 =
  20. 20.Half of 172 =
  21. 21.Double 21 =
  22. 22.Half of 194 =
  23. 23.Half of 154 =
  24. 24.Double 37 =
  25. 25.Double 99 =
  26. 26.Double 87 =
  27. 27.Double 14 =
  28. 28.Half of 104 =
  29. 29.Half of 66 =
  30. 30.Double 82 =
  31. 31.Double 85 =
  32. 32.Half of 82 =
  33. 33.Half of 24 =
  34. 34.Half of 124 =
  35. 35.Half of 72 =
  36. 36.Half of 94 =
  37. 37.Half of 144 =
  38. 38.Half of 62 =
  39. 39.Double 23 =
  40. 40.Double 22 =

Answer key

  1. 78
  2. 108
  3. 132
  4. 61
  5. 32
  6. 96
  7. 58
  8. 22
  9. 36
  10. 104
  11. 51
  12. 37
  13. 27
  14. 50
  15. 24
  16. 32
  17. 81
  18. 86
  19. 29
  20. 86
  21. 42
  22. 97
  23. 77
  24. 74
  25. 198
  26. 174
  27. 28
  28. 52
  29. 33
  30. 164
  31. 170
  32. 41
  33. 12
  34. 62
  35. 36
  36. 47
  37. 72
  38. 31
  39. 46
  40. 44

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