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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 348 · 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 44 =
  2. 2.Double 67 =
  3. 3.Half of 46 =
  4. 4.Double 51 =
  5. 5.Double 78 =
  6. 6.Half of 18 =
  7. 7.Double 32 =
  8. 8.Double 79 =
  9. 9.Double 64 =
  10. 10.Double 45 =
  11. 11.Double 82 =
  12. 12.Half of 146 =
  13. 13.Half of 142 =
  14. 14.Double 27 =
  15. 15.Double 18 =
  16. 16.Half of 152 =
  17. 17.Double 56 =
  18. 18.Half of 36 =
  19. 19.Half of 54 =
  20. 20.Double 38 =
  21. 21.Half of 26 =
  22. 22.Half of 194 =
  23. 23.Double 96 =
  24. 24.Double 98 =
  25. 25.Double 39 =
  26. 26.Half of 172 =
  27. 27.Half of 188 =
  28. 28.Half of 162 =
  29. 29.Double 77 =
  30. 30.Half of 62 =
  31. 31.Half of 182 =
  32. 32.Half of 38 =
  33. 33.Double 17 =
  34. 34.Half of 112 =
  35. 35.Double 66 =
  36. 36.Double 28 =
  37. 37.Half of 22 =
  38. 38.Half of 116 =
  39. 39.Double 81 =
  40. 40.Double 48 =

Answer key

  1. 22
  2. 134
  3. 23
  4. 102
  5. 156
  6. 9
  7. 64
  8. 158
  9. 128
  10. 90
  11. 164
  12. 73
  13. 71
  14. 54
  15. 36
  16. 76
  17. 112
  18. 18
  19. 27
  20. 76
  21. 13
  22. 97
  23. 192
  24. 196
  25. 78
  26. 86
  27. 94
  28. 81
  29. 154
  30. 31
  31. 91
  32. 19
  33. 34
  34. 56
  35. 132
  36. 56
  37. 11
  38. 58
  39. 162
  40. 96

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