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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 861 · 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 92 =
  2. 2.Double 34 =
  3. 3.Double 75 =
  4. 4.Half of 22 =
  5. 5.Half of 54 =
  6. 6.Half of 184 =
  7. 7.Double 13 =
  8. 8.Double 93 =
  9. 9.Half of 194 =
  10. 10.Double 87 =
  11. 11.Double 74 =
  12. 12.Half of 132 =
  13. 13.Half of 172 =
  14. 14.Double 41 =
  15. 15.Half of 12 =
  16. 16.Double 39 =
  17. 17.Double 37 =
  18. 18.Double 89 =
  19. 19.Double 57 =
  20. 20.Double 31 =
  21. 21.Double 58 =
  22. 22.Half of 66 =
  23. 23.Double 14 =
  24. 24.Double 78 =
  25. 25.Half of 118 =
  26. 26.Half of 158 =
  27. 27.Half of 122 =
  28. 28.Double 12 =
  29. 29.Double 73 =
  30. 30.Double 63 =
  31. 31.Double 21 =
  32. 32.Half of 62 =
  33. 33.Half of 78 =
  34. 34.Double 51 =
  35. 35.Half of 26 =
  36. 36.Double 67 =
  37. 37.Half of 196 =
  38. 38.Double 97 =
  39. 39.Double 72 =
  40. 40.Double 53 =

Answer key

  1. 46
  2. 68
  3. 150
  4. 11
  5. 27
  6. 92
  7. 26
  8. 186
  9. 97
  10. 174
  11. 148
  12. 66
  13. 86
  14. 82
  15. 6
  16. 78
  17. 74
  18. 178
  19. 114
  20. 62
  21. 116
  22. 33
  23. 28
  24. 156
  25. 59
  26. 79
  27. 61
  28. 24
  29. 146
  30. 126
  31. 42
  32. 31
  33. 39
  34. 102
  35. 13
  36. 134
  37. 98
  38. 194
  39. 144
  40. 106

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