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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 195 · 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 23 =
  2. 2.Half of 192 =
  3. 3.Double 26 =
  4. 4.Double 78 =
  5. 5.Half of 138 =
  6. 6.Half of 36 =
  7. 7.Half of 186 =
  8. 8.Half of 102 =
  9. 9.Double 74 =
  10. 10.Half of 92 =
  11. 11.Half of 148 =
  12. 12.Half of 74 =
  13. 13.Double 96 =
  14. 14.Double 11 =
  15. 15.Half of 22 =
  16. 16.Double 54 =
  17. 17.Double 61 =
  18. 18.Double 84 =
  19. 19.Double 77 =
  20. 20.Double 21 =
  21. 21.Double 24 =
  22. 22.Double 68 =
  23. 23.Half of 72 =
  24. 24.Half of 132 =
  25. 25.Half of 38 =
  26. 26.Half of 82 =
  27. 27.Double 31 =
  28. 28.Half of 196 =
  29. 29.Double 32 =
  30. 30.Half of 164 =
  31. 31.Double 87 =
  32. 32.Double 27 =
  33. 33.Half of 144 =
  34. 34.Half of 18 =
  35. 35.Half of 12 =
  36. 36.Double 85 =
  37. 37.Half of 52 =
  38. 38.Double 37 =
  39. 39.Half of 62 =
  40. 40.Double 17 =

Answer key

  1. 46
  2. 96
  3. 52
  4. 156
  5. 69
  6. 18
  7. 93
  8. 51
  9. 148
  10. 46
  11. 74
  12. 37
  13. 192
  14. 22
  15. 11
  16. 108
  17. 122
  18. 168
  19. 154
  20. 42
  21. 48
  22. 136
  23. 36
  24. 66
  25. 19
  26. 41
  27. 62
  28. 98
  29. 64
  30. 82
  31. 174
  32. 54
  33. 72
  34. 9
  35. 6
  36. 170
  37. 26
  38. 74
  39. 31
  40. 34

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