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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 252 · 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 108 =
  2. 2.Half of 62 =
  3. 3.Double 66 =
  4. 4.Double 85 =
  5. 5.Half of 186 =
  6. 6.Double 26 =
  7. 7.Double 46 =
  8. 8.Double 24 =
  9. 9.Half of 192 =
  10. 10.Double 95 =
  11. 11.Half of 176 =
  12. 12.Half of 96 =
  13. 13.Half of 92 =
  14. 14.Half of 84 =
  15. 15.Double 68 =
  16. 16.Double 33 =
  17. 17.Half of 162 =
  18. 18.Half of 128 =
  19. 19.Half of 14 =
  20. 20.Double 28 =
  21. 21.Double 36 =
  22. 22.Half of 38 =
  23. 23.Half of 12 =
  24. 24.Double 84 =
  25. 25.Half of 122 =
  26. 26.Double 78 =
  27. 27.Half of 22 =
  28. 28.Double 56 =
  29. 29.Half of 154 =
  30. 30.Half of 72 =
  31. 31.Double 41 =
  32. 32.Half of 182 =
  33. 33.Double 59 =
  34. 34.Half of 184 =
  35. 35.Double 11 =
  36. 36.Half of 48 =
  37. 37.Half of 36 =
  38. 38.Half of 172 =
  39. 39.Double 17 =
  40. 40.Double 91 =

Answer key

  1. 54
  2. 31
  3. 132
  4. 170
  5. 93
  6. 52
  7. 92
  8. 48
  9. 96
  10. 190
  11. 88
  12. 48
  13. 46
  14. 42
  15. 136
  16. 66
  17. 81
  18. 64
  19. 7
  20. 56
  21. 72
  22. 19
  23. 6
  24. 168
  25. 61
  26. 156
  27. 11
  28. 112
  29. 77
  30. 36
  31. 82
  32. 91
  33. 118
  34. 92
  35. 22
  36. 24
  37. 18
  38. 86
  39. 34
  40. 182

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