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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 522 · 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 138 =
  2. 2.Half of 168 =
  3. 3.Half of 44 =
  4. 4.Half of 82 =
  5. 5.Double 49 =
  6. 6.Double 76 =
  7. 7.Double 14 =
  8. 8.Double 97 =
  9. 9.Double 23 =
  10. 10.Half of 52 =
  11. 11.Double 33 =
  12. 12.Double 25 =
  13. 13.Half of 156 =
  14. 14.Double 81 =
  15. 15.Double 31 =
  16. 16.Half of 62 =
  17. 17.Half of 182 =
  18. 18.Double 68 =
  19. 19.Half of 54 =
  20. 20.Half of 194 =
  21. 21.Double 13 =
  22. 22.Half of 196 =
  23. 23.Half of 92 =
  24. 24.Double 18 =
  25. 25.Double 12 =
  26. 26.Double 22 =
  27. 27.Double 88 =
  28. 28.Double 66 =
  29. 29.Half of 58 =
  30. 30.Half of 74 =
  31. 31.Double 24 =
  32. 32.Half of 144 =
  33. 33.Half of 172 =
  34. 34.Double 58 =
  35. 35.Double 71 =
  36. 36.Half of 116 =
  37. 37.Double 56 =
  38. 38.Double 17 =
  39. 39.Double 91 =
  40. 40.Double 61 =

Answer key

  1. 69
  2. 84
  3. 22
  4. 41
  5. 98
  6. 152
  7. 28
  8. 194
  9. 46
  10. 26
  11. 66
  12. 50
  13. 78
  14. 162
  15. 62
  16. 31
  17. 91
  18. 136
  19. 27
  20. 97
  21. 26
  22. 98
  23. 46
  24. 36
  25. 24
  26. 44
  27. 176
  28. 132
  29. 29
  30. 37
  31. 48
  32. 72
  33. 86
  34. 116
  35. 142
  36. 58
  37. 112
  38. 34
  39. 182
  40. 122

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