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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 430 · 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 82 =
  2. 2.Half of 112 =
  3. 3.Half of 182 =
  4. 4.Half of 174 =
  5. 5.Half of 48 =
  6. 6.Half of 168 =
  7. 7.Half of 28 =
  8. 8.Double 85 =
  9. 9.Double 88 =
  10. 10.Half of 58 =
  11. 11.Double 56 =
  12. 12.Double 51 =
  13. 13.Double 23 =
  14. 14.Double 28 =
  15. 15.Double 99 =
  16. 16.Half of 138 =
  17. 17.Half of 24 =
  18. 18.Double 75 =
  19. 19.Double 63 =
  20. 20.Half of 72 =
  21. 21.Double 87 =
  22. 22.Half of 66 =
  23. 23.Double 43 =
  24. 24.Half of 16 =
  25. 25.Double 81 =
  26. 26.Half of 164 =
  27. 27.Half of 46 =
  28. 28.Double 82 =
  29. 29.Half of 108 =
  30. 30.Double 47 =
  31. 31.Half of 26 =
  32. 32.Double 12 =
  33. 33.Half of 62 =
  34. 34.Double 65 =
  35. 35.Half of 114 =
  36. 36.Double 17 =
  37. 37.Double 34 =
  38. 38.Double 32 =
  39. 39.Double 96 =
  40. 40.Half of 188 =

Answer key

  1. 41
  2. 56
  3. 91
  4. 87
  5. 24
  6. 84
  7. 14
  8. 170
  9. 176
  10. 29
  11. 112
  12. 102
  13. 46
  14. 56
  15. 198
  16. 69
  17. 12
  18. 150
  19. 126
  20. 36
  21. 174
  22. 33
  23. 86
  24. 8
  25. 162
  26. 82
  27. 23
  28. 164
  29. 54
  30. 94
  31. 13
  32. 24
  33. 31
  34. 130
  35. 57
  36. 34
  37. 68
  38. 64
  39. 192
  40. 94

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