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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 978 · 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 22 =
  2. 2.Double 53 =
  3. 3.Double 51 =
  4. 4.Half of 148 =
  5. 5.Half of 44 =
  6. 6.Half of 102 =
  7. 7.Double 97 =
  8. 8.Half of 26 =
  9. 9.Double 25 =
  10. 10.Half of 158 =
  11. 11.Double 47 =
  12. 12.Half of 78 =
  13. 13.Double 18 =
  14. 14.Half of 156 =
  15. 15.Half of 112 =
  16. 16.Double 52 =
  17. 17.Double 46 =
  18. 18.Double 67 =
  19. 19.Half of 64 =
  20. 20.Double 82 =
  21. 21.Double 59 =
  22. 22.Double 17 =
  23. 23.Double 88 =
  24. 24.Half of 104 =
  25. 25.Half of 68 =
  26. 26.Half of 82 =
  27. 27.Half of 182 =
  28. 28.Half of 174 =
  29. 29.Half of 76 =
  30. 30.Half of 32 =
  31. 31.Half of 58 =
  32. 32.Half of 162 =
  33. 33.Half of 98 =
  34. 34.Double 73 =
  35. 35.Half of 92 =
  36. 36.Half of 84 =
  37. 37.Double 45 =
  38. 38.Half of 194 =
  39. 39.Half of 18 =
  40. 40.Double 13 =

Answer key

  1. 11
  2. 106
  3. 102
  4. 74
  5. 22
  6. 51
  7. 194
  8. 13
  9. 50
  10. 79
  11. 94
  12. 39
  13. 36
  14. 78
  15. 56
  16. 104
  17. 92
  18. 134
  19. 32
  20. 164
  21. 118
  22. 34
  23. 176
  24. 52
  25. 34
  26. 41
  27. 91
  28. 87
  29. 38
  30. 16
  31. 29
  32. 81
  33. 49
  34. 146
  35. 46
  36. 42
  37. 90
  38. 97
  39. 9
  40. 26

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