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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 873 · 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 51 =
  2. 2.Half of 192 =
  3. 3.Half of 82 =
  4. 4.Half of 176 =
  5. 5.Double 26 =
  6. 6.Double 91 =
  7. 7.Half of 74 =
  8. 8.Half of 162 =
  9. 9.Double 68 =
  10. 10.Double 45 =
  11. 11.Half of 64 =
  12. 12.Double 43 =
  13. 13.Half of 136 =
  14. 14.Double 81 =
  15. 15.Half of 102 =
  16. 16.Double 36 =
  17. 17.Half of 122 =
  18. 18.Double 31 =
  19. 19.Half of 186 =
  20. 20.Double 23 =
  21. 21.Half of 96 =
  22. 22.Half of 106 =
  23. 23.Double 39 =
  24. 24.Double 93 =
  25. 25.Half of 58 =
  26. 26.Half of 128 =
  27. 27.Half of 144 =
  28. 28.Double 83 =
  29. 29.Double 64 =
  30. 30.Double 76 =
  31. 31.Double 35 =
  32. 32.Half of 92 =
  33. 33.Half of 32 =
  34. 34.Double 48 =
  35. 35.Double 24 =
  36. 36.Half of 34 =
  37. 37.Half of 126 =
  38. 38.Half of 118 =
  39. 39.Half of 42 =
  40. 40.Half of 36 =

Answer key

  1. 102
  2. 96
  3. 41
  4. 88
  5. 52
  6. 182
  7. 37
  8. 81
  9. 136
  10. 90
  11. 32
  12. 86
  13. 68
  14. 162
  15. 51
  16. 72
  17. 61
  18. 62
  19. 93
  20. 46
  21. 48
  22. 53
  23. 78
  24. 186
  25. 29
  26. 64
  27. 72
  28. 166
  29. 128
  30. 152
  31. 70
  32. 46
  33. 16
  34. 96
  35. 48
  36. 17
  37. 63
  38. 59
  39. 21
  40. 18

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