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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 912 · 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 96 =
  2. 2.Double 68 =
  3. 3.Half of 52 =
  4. 4.Half of 188 =
  5. 5.Double 43 =
  6. 6.Double 85 =
  7. 7.Half of 84 =
  8. 8.Double 48 =
  9. 9.Half of 34 =
  10. 10.Half of 102 =
  11. 11.Half of 128 =
  12. 12.Half of 134 =
  13. 13.Double 55 =
  14. 14.Half of 162 =
  15. 15.Double 61 =
  16. 16.Double 34 =
  17. 17.Half of 158 =
  18. 18.Double 83 =
  19. 19.Half of 22 =
  20. 20.Double 93 =
  21. 21.Double 16 =
  22. 22.Half of 54 =
  23. 23.Half of 32 =
  24. 24.Double 62 =
  25. 25.Half of 194 =
  26. 26.Half of 28 =
  27. 27.Half of 168 =
  28. 28.Double 21 =
  29. 29.Double 41 =
  30. 30.Double 25 =
  31. 31.Double 71 =
  32. 32.Double 51 =
  33. 33.Double 91 =
  34. 34.Double 38 =
  35. 35.Half of 42 =
  36. 36.Double 49 =
  37. 37.Double 67 =
  38. 38.Double 99 =
  39. 39.Half of 64 =
  40. 40.Half of 44 =

Answer key

  1. 48
  2. 136
  3. 26
  4. 94
  5. 86
  6. 170
  7. 42
  8. 96
  9. 17
  10. 51
  11. 64
  12. 67
  13. 110
  14. 81
  15. 122
  16. 68
  17. 79
  18. 166
  19. 11
  20. 186
  21. 32
  22. 27
  23. 16
  24. 124
  25. 97
  26. 14
  27. 84
  28. 42
  29. 82
  30. 50
  31. 142
  32. 102
  33. 182
  34. 76
  35. 21
  36. 98
  37. 134
  38. 198
  39. 32
  40. 22

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