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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 870 · 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.Double 81 =
  3. 3.Double 74 =
  4. 4.Double 71 =
  5. 5.Half of 82 =
  6. 6.Half of 122 =
  7. 7.Double 52 =
  8. 8.Half of 178 =
  9. 9.Double 19 =
  10. 10.Double 48 =
  11. 11.Half of 26 =
  12. 12.Half of 146 =
  13. 13.Half of 164 =
  14. 14.Double 14 =
  15. 15.Double 66 =
  16. 16.Double 96 =
  17. 17.Half of 48 =
  18. 18.Half of 192 =
  19. 19.Double 63 =
  20. 20.Half of 62 =
  21. 21.Double 41 =
  22. 22.Half of 18 =
  23. 23.Double 69 =
  24. 24.Double 99 =
  25. 25.Double 37 =
  26. 26.Half of 24 =
  27. 27.Double 32 =
  28. 28.Half of 124 =
  29. 29.Double 92 =
  30. 30.Double 24 =
  31. 31.Half of 22 =
  32. 32.Half of 78 =
  33. 33.Half of 72 =
  34. 34.Double 42 =
  35. 35.Half of 172 =
  36. 36.Half of 106 =
  37. 37.Double 15 =
  38. 38.Half of 32 =
  39. 39.Double 31 =
  40. 40.Double 75 =

Answer key

  1. 92
  2. 162
  3. 148
  4. 142
  5. 41
  6. 61
  7. 104
  8. 89
  9. 38
  10. 96
  11. 13
  12. 73
  13. 82
  14. 28
  15. 132
  16. 192
  17. 24
  18. 96
  19. 126
  20. 31
  21. 82
  22. 9
  23. 138
  24. 198
  25. 74
  26. 12
  27. 64
  28. 62
  29. 184
  30. 48
  31. 11
  32. 39
  33. 36
  34. 84
  35. 86
  36. 53
  37. 30
  38. 16
  39. 62
  40. 150

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