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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 878 · 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 94 =
  2. 2.Half of 68 =
  3. 3.Double 83 =
  4. 4.Half of 128 =
  5. 5.Double 62 =
  6. 6.Half of 136 =
  7. 7.Half of 62 =
  8. 8.Half of 24 =
  9. 9.Double 43 =
  10. 10.Double 46 =
  11. 11.Half of 52 =
  12. 12.Double 17 =
  13. 13.Half of 46 =
  14. 14.Double 75 =
  15. 15.Double 51 =
  16. 16.Double 34 =
  17. 17.Double 71 =
  18. 18.Double 77 =
  19. 19.Half of 38 =
  20. 20.Half of 142 =
  21. 21.Half of 162 =
  22. 22.Half of 152 =
  23. 23.Double 45 =
  24. 24.Half of 102 =
  25. 25.Half of 112 =
  26. 26.Double 88 =
  27. 27.Half of 138 =
  28. 28.Half of 174 =
  29. 29.Double 82 =
  30. 30.Half of 34 =
  31. 31.Half of 158 =
  32. 32.Double 21 =
  33. 33.Half of 188 =
  34. 34.Double 22 =
  35. 35.Double 48 =
  36. 36.Double 91 =
  37. 37.Double 54 =
  38. 38.Half of 74 =
  39. 39.Half of 64 =
  40. 40.Double 31 =

Answer key

  1. 47
  2. 34
  3. 166
  4. 64
  5. 124
  6. 68
  7. 31
  8. 12
  9. 86
  10. 92
  11. 26
  12. 34
  13. 23
  14. 150
  15. 102
  16. 68
  17. 142
  18. 154
  19. 19
  20. 71
  21. 81
  22. 76
  23. 90
  24. 51
  25. 56
  26. 176
  27. 69
  28. 87
  29. 164
  30. 17
  31. 79
  32. 42
  33. 94
  34. 44
  35. 96
  36. 182
  37. 108
  38. 37
  39. 32
  40. 62

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