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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 108 · 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 152 =
  2. 2.Half of 96 =
  3. 3.Double 31 =
  4. 4.Half of 84 =
  5. 5.Half of 22 =
  6. 6.Half of 88 =
  7. 7.Half of 158 =
  8. 8.Half of 64 =
  9. 9.Double 17 =
  10. 10.Double 55 =
  11. 11.Double 43 =
  12. 12.Double 95 =
  13. 13.Double 85 =
  14. 14.Half of 192 =
  15. 15.Double 65 =
  16. 16.Half of 18 =
  17. 17.Half of 72 =
  18. 18.Double 37 =
  19. 19.Half of 134 =
  20. 20.Half of 14 =
  21. 21.Half of 188 =
  22. 22.Half of 52 =
  23. 23.Double 68 =
  24. 24.Half of 176 =
  25. 25.Double 75 =
  26. 26.Double 97 =
  27. 27.Double 81 =
  28. 28.Double 56 =
  29. 29.Double 41 =
  30. 30.Double 25 =
  31. 31.Half of 116 =
  32. 32.Half of 146 =
  33. 33.Double 21 =
  34. 34.Half of 54 =
  35. 35.Double 16 =
  36. 36.Double 34 =
  37. 37.Half of 46 =
  38. 38.Double 27 =
  39. 39.Double 47 =
  40. 40.Half of 198 =

Answer key

  1. 76
  2. 48
  3. 62
  4. 42
  5. 11
  6. 44
  7. 79
  8. 32
  9. 34
  10. 110
  11. 86
  12. 190
  13. 170
  14. 96
  15. 130
  16. 9
  17. 36
  18. 74
  19. 67
  20. 7
  21. 94
  22. 26
  23. 136
  24. 88
  25. 150
  26. 194
  27. 162
  28. 112
  29. 82
  30. 50
  31. 58
  32. 73
  33. 42
  34. 27
  35. 32
  36. 68
  37. 23
  38. 54
  39. 94
  40. 99

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