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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 979 · 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 184 =
  2. 2.Half of 94 =
  3. 3.Double 33 =
  4. 4.Double 76 =
  5. 5.Double 53 =
  6. 6.Double 81 =
  7. 7.Half of 142 =
  8. 8.Double 59 =
  9. 9.Half of 64 =
  10. 10.Double 83 =
  11. 11.Double 99 =
  12. 12.Double 82 =
  13. 13.Half of 134 =
  14. 14.Double 16 =
  15. 15.Double 98 =
  16. 16.Double 14 =
  17. 17.Double 29 =
  18. 18.Double 48 =
  19. 19.Double 38 =
  20. 20.Half of 26 =
  21. 21.Half of 32 =
  22. 22.Half of 62 =
  23. 23.Double 58 =
  24. 24.Half of 172 =
  25. 25.Double 71 =
  26. 26.Half of 122 =
  27. 27.Half of 54 =
  28. 28.Double 66 =
  29. 29.Half of 138 =
  30. 30.Half of 176 =
  31. 31.Double 78 =
  32. 32.Half of 128 =
  33. 33.Half of 118 =
  34. 34.Half of 58 =
  35. 35.Double 43 =
  36. 36.Half of 46 =
  37. 37.Double 19 =
  38. 38.Half of 84 =
  39. 39.Half of 178 =
  40. 40.Half of 186 =

Answer key

  1. 92
  2. 47
  3. 66
  4. 152
  5. 106
  6. 162
  7. 71
  8. 118
  9. 32
  10. 166
  11. 198
  12. 164
  13. 67
  14. 32
  15. 196
  16. 28
  17. 58
  18. 96
  19. 76
  20. 13
  21. 16
  22. 31
  23. 116
  24. 86
  25. 142
  26. 61
  27. 27
  28. 132
  29. 69
  30. 88
  31. 156
  32. 64
  33. 59
  34. 29
  35. 86
  36. 23
  37. 38
  38. 42
  39. 89
  40. 93

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