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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 941 · 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 82 =
  2. 2.Double 66 =
  3. 3.Half of 106 =
  4. 4.Half of 62 =
  5. 5.Half of 56 =
  6. 6.Double 57 =
  7. 7.Double 28 =
  8. 8.Double 73 =
  9. 9.Half of 78 =
  10. 10.Double 13 =
  11. 11.Double 62 =
  12. 12.Half of 102 =
  13. 13.Half of 174 =
  14. 14.Double 72 =
  15. 15.Half of 92 =
  16. 16.Half of 132 =
  17. 17.Double 51 =
  18. 18.Double 59 =
  19. 19.Double 99 =
  20. 20.Half of 172 =
  21. 21.Half of 198 =
  22. 22.Half of 66 =
  23. 23.Half of 186 =
  24. 24.Half of 44 =
  25. 25.Double 71 =
  26. 26.Half of 76 =
  27. 27.Double 44 =
  28. 28.Half of 162 =
  29. 29.Double 31 =
  30. 30.Half of 178 =
  31. 31.Half of 194 =
  32. 32.Half of 28 =
  33. 33.Double 26 =
  34. 34.Half of 54 =
  35. 35.Half of 96 =
  36. 36.Half of 158 =
  37. 37.Half of 114 =
  38. 38.Half of 122 =
  39. 39.Half of 24 =
  40. 40.Half of 46 =

Answer key

  1. 41
  2. 132
  3. 53
  4. 31
  5. 28
  6. 114
  7. 56
  8. 146
  9. 39
  10. 26
  11. 124
  12. 51
  13. 87
  14. 144
  15. 46
  16. 66
  17. 102
  18. 118
  19. 198
  20. 86
  21. 99
  22. 33
  23. 93
  24. 22
  25. 142
  26. 38
  27. 88
  28. 81
  29. 62
  30. 89
  31. 97
  32. 14
  33. 52
  34. 27
  35. 48
  36. 79
  37. 57
  38. 61
  39. 12
  40. 23

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