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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 962 · 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 158 =
  2. 2.Double 85 =
  3. 3.Half of 148 =
  4. 4.Half of 34 =
  5. 5.Double 71 =
  6. 6.Double 61 =
  7. 7.Double 89 =
  8. 8.Half of 152 =
  9. 9.Half of 26 =
  10. 10.Half of 112 =
  11. 11.Half of 18 =
  12. 12.Half of 48 =
  13. 13.Double 19 =
  14. 14.Half of 76 =
  15. 15.Half of 12 =
  16. 16.Double 23 =
  17. 17.Half of 172 =
  18. 18.Half of 16 =
  19. 19.Half of 94 =
  20. 20.Double 66 =
  21. 21.Double 26 =
  22. 22.Double 17 =
  23. 23.Double 33 =
  24. 24.Half of 146 =
  25. 25.Half of 114 =
  26. 26.Half of 186 =
  27. 27.Half of 166 =
  28. 28.Double 46 =
  29. 29.Half of 176 =
  30. 30.Half of 24 =
  31. 31.Double 29 =
  32. 32.Half of 198 =
  33. 33.Double 63 =
  34. 34.Half of 62 =
  35. 35.Half of 156 =
  36. 36.Half of 138 =
  37. 37.Double 31 =
  38. 38.Half of 126 =
  39. 39.Half of 188 =
  40. 40.Half of 66 =

Answer key

  1. 79
  2. 170
  3. 74
  4. 17
  5. 142
  6. 122
  7. 178
  8. 76
  9. 13
  10. 56
  11. 9
  12. 24
  13. 38
  14. 38
  15. 6
  16. 46
  17. 86
  18. 8
  19. 47
  20. 132
  21. 52
  22. 34
  23. 66
  24. 73
  25. 57
  26. 93
  27. 83
  28. 92
  29. 88
  30. 12
  31. 58
  32. 99
  33. 126
  34. 31
  35. 78
  36. 69
  37. 62
  38. 63
  39. 94
  40. 33

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