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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 241 · 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 66 =
  2. 2.Half of 36 =
  3. 3.Half of 132 =
  4. 4.Half of 64 =
  5. 5.Double 32 =
  6. 6.Double 18 =
  7. 7.Half of 26 =
  8. 8.Double 85 =
  9. 9.Double 65 =
  10. 10.Half of 178 =
  11. 11.Half of 144 =
  12. 12.Double 76 =
  13. 13.Half of 62 =
  14. 14.Double 14 =
  15. 15.Double 19 =
  16. 16.Half of 18 =
  17. 17.Half of 196 =
  18. 18.Double 41 =
  19. 19.Half of 134 =
  20. 20.Half of 24 =
  21. 21.Double 21 =
  22. 22.Double 39 =
  23. 23.Half of 162 =
  24. 24.Double 97 =
  25. 25.Half of 104 =
  26. 26.Half of 186 =
  27. 27.Half of 68 =
  28. 28.Half of 52 =
  29. 29.Half of 138 =
  30. 30.Half of 106 =
  31. 31.Half of 66 =
  32. 32.Half of 16 =
  33. 33.Double 12 =
  34. 34.Half of 22 =
  35. 35.Double 22 =
  36. 36.Half of 42 =
  37. 37.Double 67 =
  38. 38.Half of 94 =
  39. 39.Double 31 =
  40. 40.Half of 152 =

Answer key

  1. 132
  2. 18
  3. 66
  4. 32
  5. 64
  6. 36
  7. 13
  8. 170
  9. 130
  10. 89
  11. 72
  12. 152
  13. 31
  14. 28
  15. 38
  16. 9
  17. 98
  18. 82
  19. 67
  20. 12
  21. 42
  22. 78
  23. 81
  24. 194
  25. 52
  26. 93
  27. 34
  28. 26
  29. 69
  30. 53
  31. 33
  32. 8
  33. 24
  34. 11
  35. 44
  36. 21
  37. 134
  38. 47
  39. 62
  40. 76

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