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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 773 · 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 22 =
  2. 2.Half of 34 =
  3. 3.Half of 26 =
  4. 4.Half of 46 =
  5. 5.Double 41 =
  6. 6.Half of 138 =
  7. 7.Double 92 =
  8. 8.Double 21 =
  9. 9.Double 22 =
  10. 10.Half of 146 =
  11. 11.Half of 42 =
  12. 12.Double 98 =
  13. 13.Double 32 =
  14. 14.Half of 82 =
  15. 15.Half of 36 =
  16. 16.Half of 126 =
  17. 17.Double 68 =
  18. 18.Half of 38 =
  19. 19.Half of 188 =
  20. 20.Half of 68 =
  21. 21.Half of 162 =
  22. 22.Half of 132 =
  23. 23.Double 93 =
  24. 24.Double 59 =
  25. 25.Double 71 =
  26. 26.Double 64 =
  27. 27.Half of 58 =
  28. 28.Double 78 =
  29. 29.Half of 72 =
  30. 30.Double 26 =
  31. 31.Half of 186 =
  32. 32.Double 18 =
  33. 33.Half of 184 =
  34. 34.Half of 152 =
  35. 35.Double 39 =
  36. 36.Half of 176 =
  37. 37.Double 25 =
  38. 38.Half of 194 =
  39. 39.Double 61 =
  40. 40.Double 55 =

Answer key

  1. 11
  2. 17
  3. 13
  4. 23
  5. 82
  6. 69
  7. 184
  8. 42
  9. 44
  10. 73
  11. 21
  12. 196
  13. 64
  14. 41
  15. 18
  16. 63
  17. 136
  18. 19
  19. 94
  20. 34
  21. 81
  22. 66
  23. 186
  24. 118
  25. 142
  26. 128
  27. 29
  28. 156
  29. 36
  30. 52
  31. 93
  32. 36
  33. 92
  34. 76
  35. 78
  36. 88
  37. 50
  38. 97
  39. 122
  40. 110

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