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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 428 · 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 156 =
  2. 2.Half of 48 =
  3. 3.Half of 108 =
  4. 4.Double 12 =
  5. 5.Double 26 =
  6. 6.Half of 22 =
  7. 7.Double 23 =
  8. 8.Double 31 =
  9. 9.Half of 106 =
  10. 10.Double 53 =
  11. 11.Double 59 =
  12. 12.Double 39 =
  13. 13.Double 37 =
  14. 14.Double 46 =
  15. 15.Half of 62 =
  16. 16.Double 49 =
  17. 17.Double 66 =
  18. 18.Double 92 =
  19. 19.Double 83 =
  20. 20.Double 41 =
  21. 21.Half of 152 =
  22. 22.Half of 196 =
  23. 23.Double 32 =
  24. 24.Half of 52 =
  25. 25.Double 81 =
  26. 26.Double 54 =
  27. 27.Double 11 =
  28. 28.Half of 36 =
  29. 29.Double 73 =
  30. 30.Half of 148 =
  31. 31.Double 99 =
  32. 32.Half of 88 =
  33. 33.Half of 164 =
  34. 34.Double 43 =
  35. 35.Double 29 =
  36. 36.Double 84 =
  37. 37.Double 77 =
  38. 38.Double 94 =
  39. 39.Half of 182 =
  40. 40.Half of 24 =

Answer key

  1. 78
  2. 24
  3. 54
  4. 24
  5. 52
  6. 11
  7. 46
  8. 62
  9. 53
  10. 106
  11. 118
  12. 78
  13. 74
  14. 92
  15. 31
  16. 98
  17. 132
  18. 184
  19. 166
  20. 82
  21. 76
  22. 98
  23. 64
  24. 26
  25. 162
  26. 108
  27. 22
  28. 18
  29. 146
  30. 74
  31. 198
  32. 44
  33. 82
  34. 86
  35. 58
  36. 168
  37. 154
  38. 188
  39. 91
  40. 12

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