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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 935 · 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.Double 29 =
  2. 2.Half of 48 =
  3. 3.Half of 192 =
  4. 4.Double 73 =
  5. 5.Half of 52 =
  6. 6.Half of 88 =
  7. 7.Double 18 =
  8. 8.Double 74 =
  9. 9.Half of 112 =
  10. 10.Double 26 =
  11. 11.Half of 86 =
  12. 12.Half of 82 =
  13. 13.Half of 34 =
  14. 14.Half of 178 =
  15. 15.Double 47 =
  16. 16.Half of 96 =
  17. 17.Double 85 =
  18. 18.Half of 184 =
  19. 19.Half of 56 =
  20. 20.Half of 54 =
  21. 21.Half of 198 =
  22. 22.Half of 132 =
  23. 23.Half of 164 =
  24. 24.Double 16 =
  25. 25.Double 61 =
  26. 26.Double 95 =
  27. 27.Half of 142 =
  28. 28.Half of 16 =
  29. 29.Half of 168 =
  30. 30.Double 51 =
  31. 31.Double 15 =
  32. 32.Double 42 =
  33. 33.Double 55 =
  34. 34.Double 17 =
  35. 35.Half of 22 =
  36. 36.Half of 122 =
  37. 37.Half of 78 =
  38. 38.Double 58 =
  39. 39.Half of 152 =
  40. 40.Half of 162 =

Answer key

  1. 58
  2. 24
  3. 96
  4. 146
  5. 26
  6. 44
  7. 36
  8. 148
  9. 56
  10. 52
  11. 43
  12. 41
  13. 17
  14. 89
  15. 94
  16. 48
  17. 170
  18. 92
  19. 28
  20. 27
  21. 99
  22. 66
  23. 82
  24. 32
  25. 122
  26. 190
  27. 71
  28. 8
  29. 84
  30. 102
  31. 30
  32. 84
  33. 110
  34. 34
  35. 11
  36. 61
  37. 39
  38. 116
  39. 76
  40. 81

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