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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 244 · 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 35 =
  2. 2.Double 71 =
  3. 3.Half of 112 =
  4. 4.Half of 82 =
  5. 5.Half of 32 =
  6. 6.Half of 166 =
  7. 7.Half of 52 =
  8. 8.Double 11 =
  9. 9.Half of 42 =
  10. 10.Double 29 =
  11. 11.Double 21 =
  12. 12.Double 93 =
  13. 13.Half of 38 =
  14. 14.Half of 136 =
  15. 15.Double 55 =
  16. 16.Half of 134 =
  17. 17.Half of 178 =
  18. 18.Double 61 =
  19. 19.Double 38 =
  20. 20.Half of 22 =
  21. 21.Half of 186 =
  22. 22.Double 44 =
  23. 23.Double 26 =
  24. 24.Double 65 =
  25. 25.Double 72 =
  26. 26.Double 91 =
  27. 27.Double 22 =
  28. 28.Half of 46 =
  29. 29.Double 83 =
  30. 30.Half of 184 =
  31. 31.Half of 198 =
  32. 32.Half of 36 =
  33. 33.Half of 182 =
  34. 34.Half of 96 =
  35. 35.Double 36 =
  36. 36.Double 92 =
  37. 37.Half of 26 =
  38. 38.Half of 142 =
  39. 39.Half of 108 =
  40. 40.Double 82 =

Answer key

  1. 70
  2. 142
  3. 56
  4. 41
  5. 16
  6. 83
  7. 26
  8. 22
  9. 21
  10. 58
  11. 42
  12. 186
  13. 19
  14. 68
  15. 110
  16. 67
  17. 89
  18. 122
  19. 76
  20. 11
  21. 93
  22. 88
  23. 52
  24. 130
  25. 144
  26. 182
  27. 44
  28. 23
  29. 166
  30. 92
  31. 99
  32. 18
  33. 91
  34. 48
  35. 72
  36. 184
  37. 13
  38. 71
  39. 54
  40. 164

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