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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 341 · 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 88 =
  2. 2.Double 84 =
  3. 3.Double 73 =
  4. 4.Half of 152 =
  5. 5.Half of 16 =
  6. 6.Half of 98 =
  7. 7.Double 47 =
  8. 8.Double 14 =
  9. 9.Double 87 =
  10. 10.Half of 28 =
  11. 11.Half of 74 =
  12. 12.Half of 36 =
  13. 13.Double 23 =
  14. 14.Double 66 =
  15. 15.Half of 58 =
  16. 16.Double 85 =
  17. 17.Half of 194 =
  18. 18.Double 45 =
  19. 19.Double 52 =
  20. 20.Half of 154 =
  21. 21.Double 31 =
  22. 22.Double 33 =
  23. 23.Half of 102 =
  24. 24.Double 34 =
  25. 25.Half of 38 =
  26. 26.Half of 184 =
  27. 27.Half of 156 =
  28. 28.Half of 32 =
  29. 29.Half of 52 =
  30. 30.Double 36 =
  31. 31.Half of 128 =
  32. 32.Half of 68 =
  33. 33.Double 12 =
  34. 34.Double 83 =
  35. 35.Half of 54 =
  36. 36.Half of 174 =
  37. 37.Double 38 =
  38. 38.Half of 114 =
  39. 39.Half of 176 =
  40. 40.Double 96 =

Answer key

  1. 44
  2. 168
  3. 146
  4. 76
  5. 8
  6. 49
  7. 94
  8. 28
  9. 174
  10. 14
  11. 37
  12. 18
  13. 46
  14. 132
  15. 29
  16. 170
  17. 97
  18. 90
  19. 104
  20. 77
  21. 62
  22. 66
  23. 51
  24. 68
  25. 19
  26. 92
  27. 78
  28. 16
  29. 26
  30. 72
  31. 64
  32. 34
  33. 24
  34. 166
  35. 27
  36. 87
  37. 76
  38. 57
  39. 88
  40. 192

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