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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 976 · 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 108 =
  2. 2.Half of 182 =
  3. 3.Half of 162 =
  4. 4.Double 91 =
  5. 5.Double 24 =
  6. 6.Double 41 =
  7. 7.Half of 112 =
  8. 8.Double 39 =
  9. 9.Half of 122 =
  10. 10.Double 28 =
  11. 11.Double 15 =
  12. 12.Half of 192 =
  13. 13.Half of 118 =
  14. 14.Double 88 =
  15. 15.Half of 178 =
  16. 16.Double 68 =
  17. 17.Double 85 =
  18. 18.Double 33 =
  19. 19.Double 83 =
  20. 20.Double 81 =
  21. 21.Half of 26 =
  22. 22.Half of 126 =
  23. 23.Double 11 =
  24. 24.Half of 94 =
  25. 25.Half of 92 =
  26. 26.Half of 148 =
  27. 27.Double 56 =
  28. 28.Half of 194 =
  29. 29.Double 79 =
  30. 30.Double 21 =
  31. 31.Half of 24 =
  32. 32.Half of 144 =
  33. 33.Double 44 =
  34. 34.Half of 164 =
  35. 35.Double 26 =
  36. 36.Half of 56 =
  37. 37.Half of 152 =
  38. 38.Half of 102 =
  39. 39.Half of 76 =
  40. 40.Half of 72 =

Answer key

  1. 54
  2. 91
  3. 81
  4. 182
  5. 48
  6. 82
  7. 56
  8. 78
  9. 61
  10. 56
  11. 30
  12. 96
  13. 59
  14. 176
  15. 89
  16. 136
  17. 170
  18. 66
  19. 166
  20. 162
  21. 13
  22. 63
  23. 22
  24. 47
  25. 46
  26. 74
  27. 112
  28. 97
  29. 158
  30. 42
  31. 12
  32. 72
  33. 88
  34. 82
  35. 52
  36. 28
  37. 76
  38. 51
  39. 38
  40. 36

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