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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 586 · 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 48 =
  2. 2.Half of 62 =
  3. 3.Double 51 =
  4. 4.Double 73 =
  5. 5.Half of 192 =
  6. 6.Half of 134 =
  7. 7.Double 71 =
  8. 8.Double 37 =
  9. 9.Half of 52 =
  10. 10.Double 41 =
  11. 11.Double 13 =
  12. 12.Half of 116 =
  13. 13.Half of 74 =
  14. 14.Double 67 =
  15. 15.Double 32 =
  16. 16.Double 59 =
  17. 17.Double 72 =
  18. 18.Half of 76 =
  19. 19.Double 17 =
  20. 20.Half of 58 =
  21. 21.Half of 138 =
  22. 22.Half of 178 =
  23. 23.Half of 44 =
  24. 24.Double 91 =
  25. 25.Double 49 =
  26. 26.Half of 188 =
  27. 27.Double 93 =
  28. 28.Double 56 =
  29. 29.Double 29 =
  30. 30.Double 44 =
  31. 31.Half of 82 =
  32. 32.Double 61 =
  33. 33.Double 81 =
  34. 34.Half of 46 =
  35. 35.Double 11 =
  36. 36.Double 19 =
  37. 37.Double 54 =
  38. 38.Half of 72 =
  39. 39.Double 18 =
  40. 40.Double 48 =

Answer key

  1. 24
  2. 31
  3. 102
  4. 146
  5. 96
  6. 67
  7. 142
  8. 74
  9. 26
  10. 82
  11. 26
  12. 58
  13. 37
  14. 134
  15. 64
  16. 118
  17. 144
  18. 38
  19. 34
  20. 29
  21. 69
  22. 89
  23. 22
  24. 182
  25. 98
  26. 94
  27. 186
  28. 112
  29. 58
  30. 88
  31. 41
  32. 122
  33. 162
  34. 23
  35. 22
  36. 38
  37. 108
  38. 36
  39. 36
  40. 96

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