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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 898 · 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 176 =
  2. 2.Double 16 =
  3. 3.Half of 28 =
  4. 4.Double 38 =
  5. 5.Double 29 =
  6. 6.Half of 26 =
  7. 7.Half of 86 =
  8. 8.Half of 42 =
  9. 9.Double 67 =
  10. 10.Half of 92 =
  11. 11.Double 41 =
  12. 12.Double 23 =
  13. 13.Half of 16 =
  14. 14.Half of 188 =
  15. 15.Half of 194 =
  16. 16.Half of 32 =
  17. 17.Half of 72 =
  18. 18.Half of 158 =
  19. 19.Double 21 =
  20. 20.Double 91 =
  21. 21.Half of 132 =
  22. 22.Double 52 =
  23. 23.Half of 124 =
  24. 24.Double 51 =
  25. 25.Double 46 =
  26. 26.Half of 64 =
  27. 27.Double 82 =
  28. 28.Double 44 =
  29. 29.Half of 18 =
  30. 30.Half of 106 =
  31. 31.Half of 172 =
  32. 32.Double 56 =
  33. 33.Half of 186 =
  34. 34.Half of 162 =
  35. 35.Double 43 =
  36. 36.Double 93 =
  37. 37.Half of 62 =
  38. 38.Half of 166 =
  39. 39.Half of 22 =
  40. 40.Half of 74 =

Answer key

  1. 88
  2. 32
  3. 14
  4. 76
  5. 58
  6. 13
  7. 43
  8. 21
  9. 134
  10. 46
  11. 82
  12. 46
  13. 8
  14. 94
  15. 97
  16. 16
  17. 36
  18. 79
  19. 42
  20. 182
  21. 66
  22. 104
  23. 62
  24. 102
  25. 92
  26. 32
  27. 164
  28. 88
  29. 9
  30. 53
  31. 86
  32. 112
  33. 93
  34. 81
  35. 86
  36. 186
  37. 31
  38. 83
  39. 11
  40. 37

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