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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 940 · 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 132 =
  2. 2.Half of 38 =
  3. 3.Half of 136 =
  4. 4.Half of 72 =
  5. 5.Half of 166 =
  6. 6.Double 84 =
  7. 7.Half of 74 =
  8. 8.Half of 116 =
  9. 9.Half of 124 =
  10. 10.Double 67 =
  11. 11.Double 32 =
  12. 12.Half of 164 =
  13. 13.Double 18 =
  14. 14.Double 62 =
  15. 15.Double 28 =
  16. 16.Double 26 =
  17. 17.Half of 194 =
  18. 18.Half of 94 =
  19. 19.Double 47 =
  20. 20.Half of 134 =
  21. 21.Half of 104 =
  22. 22.Half of 64 =
  23. 23.Double 44 =
  24. 24.Half of 68 =
  25. 25.Half of 106 =
  26. 26.Half of 102 =
  27. 27.Double 51 =
  28. 28.Double 58 =
  29. 29.Half of 62 =
  30. 30.Double 66 =
  31. 31.Half of 26 =
  32. 32.Half of 98 =
  33. 33.Half of 66 =
  34. 34.Double 89 =
  35. 35.Double 23 =
  36. 36.Half of 42 =
  37. 37.Half of 54 =
  38. 38.Double 73 =
  39. 39.Double 31 =
  40. 40.Double 99 =

Answer key

  1. 66
  2. 19
  3. 68
  4. 36
  5. 83
  6. 168
  7. 37
  8. 58
  9. 62
  10. 134
  11. 64
  12. 82
  13. 36
  14. 124
  15. 56
  16. 52
  17. 97
  18. 47
  19. 94
  20. 67
  21. 52
  22. 32
  23. 88
  24. 34
  25. 53
  26. 51
  27. 102
  28. 116
  29. 31
  30. 132
  31. 13
  32. 49
  33. 33
  34. 178
  35. 46
  36. 21
  37. 27
  38. 146
  39. 62
  40. 198

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