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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 973 · 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 148 =
  2. 2.Double 83 =
  3. 3.Half of 54 =
  4. 4.Double 53 =
  5. 5.Half of 102 =
  6. 6.Double 21 =
  7. 7.Double 17 =
  8. 8.Double 61 =
  9. 9.Half of 64 =
  10. 10.Half of 72 =
  11. 11.Half of 186 =
  12. 12.Double 31 =
  13. 13.Half of 156 =
  14. 14.Half of 142 =
  15. 15.Double 27 =
  16. 16.Half of 28 =
  17. 17.Double 52 =
  18. 18.Double 13 =
  19. 19.Half of 118 =
  20. 20.Double 26 =
  21. 21.Half of 16 =
  22. 22.Double 81 =
  23. 23.Double 24 =
  24. 24.Half of 136 =
  25. 25.Double 71 =
  26. 26.Double 34 =
  27. 27.Half of 52 =
  28. 28.Double 82 =
  29. 29.Double 87 =
  30. 30.Half of 84 =
  31. 31.Half of 114 =
  32. 32.Half of 154 =
  33. 33.Half of 88 =
  34. 34.Half of 22 =
  35. 35.Half of 82 =
  36. 36.Half of 126 =
  37. 37.Double 77 =
  38. 38.Half of 42 =
  39. 39.Double 32 =
  40. 40.Half of 132 =

Answer key

  1. 74
  2. 166
  3. 27
  4. 106
  5. 51
  6. 42
  7. 34
  8. 122
  9. 32
  10. 36
  11. 93
  12. 62
  13. 78
  14. 71
  15. 54
  16. 14
  17. 104
  18. 26
  19. 59
  20. 52
  21. 8
  22. 162
  23. 48
  24. 68
  25. 142
  26. 68
  27. 26
  28. 164
  29. 174
  30. 42
  31. 57
  32. 77
  33. 44
  34. 11
  35. 41
  36. 63
  37. 154
  38. 21
  39. 64
  40. 66

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