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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 514 · 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.Double 17 =
  2. 2.Half of 52 =
  3. 3.Half of 64 =
  4. 4.Half of 14 =
  5. 5.Half of 82 =
  6. 6.Double 19 =
  7. 7.Double 22 =
  8. 8.Half of 88 =
  9. 9.Half of 184 =
  10. 10.Half of 164 =
  11. 11.Double 71 =
  12. 12.Double 26 =
  13. 13.Half of 152 =
  14. 14.Double 97 =
  15. 15.Double 43 =
  16. 16.Double 68 =
  17. 17.Half of 172 =
  18. 18.Double 93 =
  19. 19.Double 21 =
  20. 20.Double 66 =
  21. 21.Half of 98 =
  22. 22.Half of 26 =
  23. 23.Double 89 =
  24. 24.Half of 138 =
  25. 25.Half of 162 =
  26. 26.Double 49 =
  27. 27.Half of 56 =
  28. 28.Double 51 =
  29. 29.Double 63 =
  30. 30.Double 47 =
  31. 31.Half of 32 =
  32. 32.Double 45 =
  33. 33.Half of 22 =
  34. 34.Double 82 =
  35. 35.Double 13 =
  36. 36.Double 42 =
  37. 37.Double 23 =
  38. 38.Double 98 =
  39. 39.Half of 194 =
  40. 40.Half of 122 =

Answer key

  1. 34
  2. 26
  3. 32
  4. 7
  5. 41
  6. 38
  7. 44
  8. 44
  9. 92
  10. 82
  11. 142
  12. 52
  13. 76
  14. 194
  15. 86
  16. 136
  17. 86
  18. 186
  19. 42
  20. 132
  21. 49
  22. 13
  23. 178
  24. 69
  25. 81
  26. 98
  27. 28
  28. 102
  29. 126
  30. 94
  31. 16
  32. 90
  33. 11
  34. 164
  35. 26
  36. 84
  37. 46
  38. 196
  39. 97
  40. 61

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