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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 783 · 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 124 =
  2. 2.Half of 52 =
  3. 3.Double 56 =
  4. 4.Half of 92 =
  5. 5.Half of 14 =
  6. 6.Double 91 =
  7. 7.Half of 16 =
  8. 8.Double 35 =
  9. 9.Double 68 =
  10. 10.Half of 182 =
  11. 11.Half of 168 =
  12. 12.Double 31 =
  13. 13.Double 43 =
  14. 14.Half of 44 =
  15. 15.Double 67 =
  16. 16.Double 46 =
  17. 17.Double 33 =
  18. 18.Half of 102 =
  19. 19.Half of 106 =
  20. 20.Half of 98 =
  21. 21.Double 22 =
  22. 22.Half of 158 =
  23. 23.Half of 56 =
  24. 24.Half of 198 =
  25. 25.Double 37 =
  26. 26.Double 81 =
  27. 27.Half of 122 =
  28. 28.Half of 172 =
  29. 29.Half of 152 =
  30. 30.Double 75 =
  31. 31.Double 38 =
  32. 32.Double 25 =
  33. 33.Double 23 =
  34. 34.Half of 42 =
  35. 35.Double 71 =
  36. 36.Half of 22 =
  37. 37.Double 36 =
  38. 38.Half of 88 =
  39. 39.Double 41 =
  40. 40.Double 97 =

Answer key

  1. 62
  2. 26
  3. 112
  4. 46
  5. 7
  6. 182
  7. 8
  8. 70
  9. 136
  10. 91
  11. 84
  12. 62
  13. 86
  14. 22
  15. 134
  16. 92
  17. 66
  18. 51
  19. 53
  20. 49
  21. 44
  22. 79
  23. 28
  24. 99
  25. 74
  26. 162
  27. 61
  28. 86
  29. 76
  30. 150
  31. 76
  32. 50
  33. 46
  34. 21
  35. 142
  36. 11
  37. 72
  38. 44
  39. 82
  40. 194

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