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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 997 · 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 174 =
  2. 2.Double 53 =
  3. 3.Double 35 =
  4. 4.Double 96 =
  5. 5.Half of 22 =
  6. 6.Half of 162 =
  7. 7.Double 75 =
  8. 8.Half of 58 =
  9. 9.Double 45 =
  10. 10.Half of 116 =
  11. 11.Double 69 =
  12. 12.Half of 46 =
  13. 13.Double 31 =
  14. 14.Double 73 =
  15. 15.Half of 122 =
  16. 16.Half of 56 =
  17. 17.Half of 154 =
  18. 18.Half of 172 =
  19. 19.Double 97 =
  20. 20.Half of 48 =
  21. 21.Double 65 =
  22. 22.Half of 84 =
  23. 23.Half of 74 =
  24. 24.Double 58 =
  25. 25.Half of 196 =
  26. 26.Half of 132 =
  27. 27.Half of 24 =
  28. 28.Double 33 =
  29. 29.Half of 184 =
  30. 30.Double 98 =
  31. 31.Double 71 =
  32. 32.Half of 78 =
  33. 33.Half of 92 =
  34. 34.Half of 14 =
  35. 35.Double 81 =
  36. 36.Half of 148 =
  37. 37.Half of 86 =
  38. 38.Half of 146 =
  39. 39.Double 56 =
  40. 40.Half of 28 =

Answer key

  1. 87
  2. 106
  3. 70
  4. 192
  5. 11
  6. 81
  7. 150
  8. 29
  9. 90
  10. 58
  11. 138
  12. 23
  13. 62
  14. 146
  15. 61
  16. 28
  17. 77
  18. 86
  19. 194
  20. 24
  21. 130
  22. 42
  23. 37
  24. 116
  25. 98
  26. 66
  27. 12
  28. 66
  29. 92
  30. 196
  31. 142
  32. 39
  33. 46
  34. 7
  35. 162
  36. 74
  37. 43
  38. 73
  39. 112
  40. 14

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