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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 360 · 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 77 =
  2. 2.Half of 62 =
  3. 3.Half of 192 =
  4. 4.Double 71 =
  5. 5.Half of 48 =
  6. 6.Double 96 =
  7. 7.Half of 38 =
  8. 8.Half of 134 =
  9. 9.Double 25 =
  10. 10.Double 57 =
  11. 11.Double 68 =
  12. 12.Double 27 =
  13. 13.Half of 22 =
  14. 14.Half of 194 =
  15. 15.Double 12 =
  16. 16.Half of 54 =
  17. 17.Double 45 =
  18. 18.Double 34 =
  19. 19.Double 69 =
  20. 20.Double 21 =
  21. 21.Double 24 =
  22. 22.Double 78 =
  23. 23.Half of 142 =
  24. 24.Half of 136 =
  25. 25.Half of 116 =
  26. 26.Half of 186 =
  27. 27.Half of 166 =
  28. 28.Double 89 =
  29. 29.Half of 34 =
  30. 30.Double 61 =
  31. 31.Double 36 =
  32. 32.Double 16 =
  33. 33.Double 42 =
  34. 34.Double 73 =
  35. 35.Double 15 =
  36. 36.Double 47 =
  37. 37.Half of 28 =
  38. 38.Half of 12 =
  39. 39.Half of 182 =
  40. 40.Double 31 =

Answer key

  1. 154
  2. 31
  3. 96
  4. 142
  5. 24
  6. 192
  7. 19
  8. 67
  9. 50
  10. 114
  11. 136
  12. 54
  13. 11
  14. 97
  15. 24
  16. 27
  17. 90
  18. 68
  19. 138
  20. 42
  21. 48
  22. 156
  23. 71
  24. 68
  25. 58
  26. 93
  27. 83
  28. 178
  29. 17
  30. 122
  31. 72
  32. 32
  33. 84
  34. 146
  35. 30
  36. 94
  37. 14
  38. 6
  39. 91
  40. 62

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