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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 53 · 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 76 =
  2. 2.Double 54 =
  3. 3.Double 83 =
  4. 4.Double 71 =
  5. 5.Half of 142 =
  6. 6.Double 88 =
  7. 7.Half of 168 =
  8. 8.Double 76 =
  9. 9.Half of 162 =
  10. 10.Half of 58 =
  11. 11.Half of 74 =
  12. 12.Half of 34 =
  13. 13.Double 19 =
  14. 14.Double 97 =
  15. 15.Half of 164 =
  16. 16.Double 27 =
  17. 17.Double 56 =
  18. 18.Double 57 =
  19. 19.Half of 192 =
  20. 20.Half of 116 =
  21. 21.Half of 188 =
  22. 22.Half of 62 =
  23. 23.Double 41 =
  24. 24.Double 18 =
  25. 25.Double 85 =
  26. 26.Double 26 =
  27. 27.Half of 32 =
  28. 28.Double 17 =
  29. 29.Double 32 =
  30. 30.Double 67 =
  31. 31.Half of 106 =
  32. 32.Half of 14 =
  33. 33.Half of 16 =
  34. 34.Double 63 =
  35. 35.Double 42 =
  36. 36.Double 24 =
  37. 37.Double 48 =
  38. 38.Double 12 =
  39. 39.Double 35 =
  40. 40.Double 29 =

Answer key

  1. 38
  2. 108
  3. 166
  4. 142
  5. 71
  6. 176
  7. 84
  8. 152
  9. 81
  10. 29
  11. 37
  12. 17
  13. 38
  14. 194
  15. 82
  16. 54
  17. 112
  18. 114
  19. 96
  20. 58
  21. 94
  22. 31
  23. 82
  24. 36
  25. 170
  26. 52
  27. 16
  28. 34
  29. 64
  30. 134
  31. 53
  32. 7
  33. 8
  34. 126
  35. 84
  36. 48
  37. 96
  38. 24
  39. 70
  40. 58

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