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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 402 · 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 164 =
  3. 3.Half of 88 =
  4. 4.Double 11 =
  5. 5.Half of 192 =
  6. 6.Half of 62 =
  7. 7.Half of 92 =
  8. 8.Double 22 =
  9. 9.Double 91 =
  10. 10.Double 46 =
  11. 11.Double 39 =
  12. 12.Half of 186 =
  13. 13.Double 82 =
  14. 14.Half of 178 =
  15. 15.Double 52 =
  16. 16.Half of 104 =
  17. 17.Half of 126 =
  18. 18.Double 12 =
  19. 19.Half of 58 =
  20. 20.Half of 42 =
  21. 21.Half of 76 =
  22. 22.Half of 106 =
  23. 23.Double 15 =
  24. 24.Half of 116 =
  25. 25.Half of 158 =
  26. 26.Half of 52 =
  27. 27.Half of 18 =
  28. 28.Double 13 =
  29. 29.Double 32 =
  30. 30.Double 45 =
  31. 31.Double 55 =
  32. 32.Half of 16 =
  33. 33.Double 86 =
  34. 34.Half of 32 =
  35. 35.Double 64 =
  36. 36.Double 59 =
  37. 37.Half of 152 =
  38. 38.Double 77 =
  39. 39.Half of 166 =
  40. 40.Half of 108 =

Answer key

  1. 41
  2. 82
  3. 44
  4. 22
  5. 96
  6. 31
  7. 46
  8. 44
  9. 182
  10. 92
  11. 78
  12. 93
  13. 164
  14. 89
  15. 104
  16. 52
  17. 63
  18. 24
  19. 29
  20. 21
  21. 38
  22. 53
  23. 30
  24. 58
  25. 79
  26. 26
  27. 9
  28. 26
  29. 64
  30. 90
  31. 110
  32. 8
  33. 172
  34. 16
  35. 128
  36. 118
  37. 76
  38. 154
  39. 83
  40. 54

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