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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 152 · 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 54 =
  2. 2.Double 75 =
  3. 3.Double 77 =
  4. 4.Half of 128 =
  5. 5.Double 12 =
  6. 6.Half of 52 =
  7. 7.Half of 24 =
  8. 8.Half of 26 =
  9. 9.Half of 86 =
  10. 10.Double 78 =
  11. 11.Half of 62 =
  12. 12.Half of 138 =
  13. 13.Double 89 =
  14. 14.Double 37 =
  15. 15.Double 52 =
  16. 16.Half of 42 =
  17. 17.Half of 192 =
  18. 18.Half of 162 =
  19. 19.Double 92 =
  20. 20.Half of 74 =
  21. 21.Double 81 =
  22. 22.Half of 28 =
  23. 23.Half of 198 =
  24. 24.Double 74 =
  25. 25.Half of 32 =
  26. 26.Half of 84 =
  27. 27.Half of 36 =
  28. 28.Half of 172 =
  29. 29.Double 96 =
  30. 30.Double 47 =
  31. 31.Double 39 =
  32. 32.Double 14 =
  33. 33.Half of 92 =
  34. 34.Double 29 =
  35. 35.Half of 82 =
  36. 36.Half of 188 =
  37. 37.Half of 132 =
  38. 38.Half of 182 =
  39. 39.Half of 114 =
  40. 40.Double 18 =

Answer key

  1. 27
  2. 150
  3. 154
  4. 64
  5. 24
  6. 26
  7. 12
  8. 13
  9. 43
  10. 156
  11. 31
  12. 69
  13. 178
  14. 74
  15. 104
  16. 21
  17. 96
  18. 81
  19. 184
  20. 37
  21. 162
  22. 14
  23. 99
  24. 148
  25. 16
  26. 42
  27. 18
  28. 86
  29. 192
  30. 94
  31. 78
  32. 28
  33. 46
  34. 58
  35. 41
  36. 94
  37. 66
  38. 91
  39. 57
  40. 36

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