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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 486 · 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 22 =
  2. 2.Half of 126 =
  3. 3.Half of 174 =
  4. 4.Double 56 =
  5. 5.Half of 98 =
  6. 6.Double 33 =
  7. 7.Half of 38 =
  8. 8.Half of 164 =
  9. 9.Double 57 =
  10. 10.Half of 166 =
  11. 11.Double 24 =
  12. 12.Half of 96 =
  13. 13.Double 27 =
  14. 14.Half of 116 =
  15. 15.Double 47 =
  16. 16.Half of 122 =
  17. 17.Half of 156 =
  18. 18.Half of 68 =
  19. 19.Half of 162 =
  20. 20.Half of 158 =
  21. 21.Double 41 =
  22. 22.Half of 56 =
  23. 23.Half of 112 =
  24. 24.Half of 32 =
  25. 25.Half of 84 =
  26. 26.Double 88 =
  27. 27.Double 66 =
  28. 28.Half of 34 =
  29. 29.Double 53 =
  30. 30.Double 35 =
  31. 31.Double 76 =
  32. 32.Double 15 =
  33. 33.Half of 76 =
  34. 34.Double 78 =
  35. 35.Half of 172 =
  36. 36.Double 75 =
  37. 37.Half of 66 =
  38. 38.Half of 44 =
  39. 39.Double 23 =
  40. 40.Half of 142 =

Answer key

  1. 44
  2. 63
  3. 87
  4. 112
  5. 49
  6. 66
  7. 19
  8. 82
  9. 114
  10. 83
  11. 48
  12. 48
  13. 54
  14. 58
  15. 94
  16. 61
  17. 78
  18. 34
  19. 81
  20. 79
  21. 82
  22. 28
  23. 56
  24. 16
  25. 42
  26. 176
  27. 132
  28. 17
  29. 106
  30. 70
  31. 152
  32. 30
  33. 38
  34. 156
  35. 86
  36. 150
  37. 33
  38. 22
  39. 46
  40. 71

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