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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 821 · 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 168 =
  2. 2.Double 27 =
  3. 3.Double 41 =
  4. 4.Double 83 =
  5. 5.Double 31 =
  6. 6.Double 91 =
  7. 7.Half of 34 =
  8. 8.Half of 64 =
  9. 9.Double 37 =
  10. 10.Double 74 =
  11. 11.Half of 32 =
  12. 12.Half of 112 =
  13. 13.Half of 44 =
  14. 14.Double 95 =
  15. 15.Half of 56 =
  16. 16.Double 88 =
  17. 17.Double 65 =
  18. 18.Double 34 =
  19. 19.Double 14 =
  20. 20.Double 46 =
  21. 21.Half of 12 =
  22. 22.Double 89 =
  23. 23.Half of 192 =
  24. 24.Double 55 =
  25. 25.Half of 172 =
  26. 26.Double 23 =
  27. 27.Double 67 =
  28. 28.Half of 62 =
  29. 29.Half of 82 =
  30. 30.Double 93 =
  31. 31.Double 45 =
  32. 32.Double 19 =
  33. 33.Half of 66 =
  34. 34.Double 22 =
  35. 35.Double 18 =
  36. 36.Double 12 =
  37. 37.Half of 42 =
  38. 38.Half of 52 =
  39. 39.Double 82 =
  40. 40.Double 24 =

Answer key

  1. 84
  2. 54
  3. 82
  4. 166
  5. 62
  6. 182
  7. 17
  8. 32
  9. 74
  10. 148
  11. 16
  12. 56
  13. 22
  14. 190
  15. 28
  16. 176
  17. 130
  18. 68
  19. 28
  20. 92
  21. 6
  22. 178
  23. 96
  24. 110
  25. 86
  26. 46
  27. 134
  28. 31
  29. 41
  30. 186
  31. 90
  32. 38
  33. 33
  34. 44
  35. 36
  36. 24
  37. 21
  38. 26
  39. 164
  40. 48

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