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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 992 · 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 162 =
  2. 2.Half of 172 =
  3. 3.Double 21 =
  4. 4.Double 83 =
  5. 5.Half of 118 =
  6. 6.Half of 166 =
  7. 7.Half of 98 =
  8. 8.Double 69 =
  9. 9.Double 26 =
  10. 10.Double 51 =
  11. 11.Half of 36 =
  12. 12.Double 16 =
  13. 13.Double 74 =
  14. 14.Half of 194 =
  15. 15.Half of 178 =
  16. 16.Half of 42 =
  17. 17.Double 72 =
  18. 18.Double 45 =
  19. 19.Half of 126 =
  20. 20.Half of 104 =
  21. 21.Double 23 =
  22. 22.Double 97 =
  23. 23.Double 46 =
  24. 24.Half of 82 =
  25. 25.Double 57 =
  26. 26.Double 67 =
  27. 27.Double 18 =
  28. 28.Half of 28 =
  29. 29.Half of 32 =
  30. 30.Double 98 =
  31. 31.Double 43 =
  32. 32.Double 33 =
  33. 33.Half of 68 =
  34. 34.Half of 46 =
  35. 35.Half of 174 =
  36. 36.Half of 158 =
  37. 37.Double 49 =
  38. 38.Double 68 =
  39. 39.Half of 168 =
  40. 40.Double 81 =

Answer key

  1. 81
  2. 86
  3. 42
  4. 166
  5. 59
  6. 83
  7. 49
  8. 138
  9. 52
  10. 102
  11. 18
  12. 32
  13. 148
  14. 97
  15. 89
  16. 21
  17. 144
  18. 90
  19. 63
  20. 52
  21. 46
  22. 194
  23. 92
  24. 41
  25. 114
  26. 134
  27. 36
  28. 14
  29. 16
  30. 196
  31. 86
  32. 66
  33. 34
  34. 23
  35. 87
  36. 79
  37. 98
  38. 136
  39. 84
  40. 162

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