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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 950 · 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.Double 33 =
  2. 2.Half of 76 =
  3. 3.Double 89 =
  4. 4.Double 52 =
  5. 5.Double 58 =
  6. 6.Half of 182 =
  7. 7.Double 96 =
  8. 8.Double 21 =
  9. 9.Double 73 =
  10. 10.Double 28 =
  11. 11.Half of 166 =
  12. 12.Double 32 =
  13. 13.Double 44 =
  14. 14.Half of 162 =
  15. 15.Half of 22 =
  16. 16.Double 71 =
  17. 17.Double 48 =
  18. 18.Double 94 =
  19. 19.Double 19 =
  20. 20.Half of 184 =
  21. 21.Half of 16 =
  22. 22.Double 42 =
  23. 23.Half of 106 =
  24. 24.Double 67 =
  25. 25.Half of 194 =
  26. 26.Double 47 =
  27. 27.Double 36 =
  28. 28.Half of 92 =
  29. 29.Double 91 =
  30. 30.Half of 44 =
  31. 31.Half of 48 =
  32. 32.Half of 62 =
  33. 33.Half of 52 =
  34. 34.Double 81 =
  35. 35.Double 76 =
  36. 36.Double 99 =
  37. 37.Half of 158 =
  38. 38.Double 62 =
  39. 39.Double 38 =
  40. 40.Double 23 =

Answer key

  1. 66
  2. 38
  3. 178
  4. 104
  5. 116
  6. 91
  7. 192
  8. 42
  9. 146
  10. 56
  11. 83
  12. 64
  13. 88
  14. 81
  15. 11
  16. 142
  17. 96
  18. 188
  19. 38
  20. 92
  21. 8
  22. 84
  23. 53
  24. 134
  25. 97
  26. 94
  27. 72
  28. 46
  29. 182
  30. 22
  31. 24
  32. 31
  33. 26
  34. 162
  35. 152
  36. 198
  37. 79
  38. 124
  39. 76
  40. 46

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