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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 80 · 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 102 =
  2. 2.Half of 92 =
  3. 3.Half of 128 =
  4. 4.Double 49 =
  5. 5.Half of 146 =
  6. 6.Double 31 =
  7. 7.Half of 82 =
  8. 8.Double 13 =
  9. 9.Double 43 =
  10. 10.Half of 132 =
  11. 11.Half of 44 =
  12. 12.Half of 158 =
  13. 13.Double 52 =
  14. 14.Half of 186 =
  15. 15.Double 18 =
  16. 16.Double 83 =
  17. 17.Double 39 =
  18. 18.Half of 48 =
  19. 19.Double 26 =
  20. 20.Double 79 =
  21. 21.Half of 18 =
  22. 22.Half of 172 =
  23. 23.Double 71 =
  24. 24.Double 12 =
  25. 25.Double 17 =
  26. 26.Half of 124 =
  27. 27.Double 33 =
  28. 28.Half of 58 =
  29. 29.Half of 104 =
  30. 30.Double 81 =
  31. 31.Half of 188 =
  32. 32.Half of 152 =
  33. 33.Half of 98 =
  34. 34.Double 88 =
  35. 35.Double 22 =
  36. 36.Double 46 =
  37. 37.Half of 96 =
  38. 38.Double 75 =
  39. 39.Double 66 =
  40. 40.Half of 136 =

Answer key

  1. 51
  2. 46
  3. 64
  4. 98
  5. 73
  6. 62
  7. 41
  8. 26
  9. 86
  10. 66
  11. 22
  12. 79
  13. 104
  14. 93
  15. 36
  16. 166
  17. 78
  18. 24
  19. 52
  20. 158
  21. 9
  22. 86
  23. 142
  24. 24
  25. 34
  26. 62
  27. 66
  28. 29
  29. 52
  30. 162
  31. 94
  32. 76
  33. 49
  34. 176
  35. 44
  36. 92
  37. 48
  38. 150
  39. 132
  40. 68

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