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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 216 · 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 64 =
  2. 2.Half of 188 =
  3. 3.Double 65 =
  4. 4.Double 46 =
  5. 5.Double 81 =
  6. 6.Half of 26 =
  7. 7.Half of 78 =
  8. 8.Double 28 =
  9. 9.Double 68 =
  10. 10.Half of 96 =
  11. 11.Double 49 =
  12. 12.Half of 46 =
  13. 13.Half of 56 =
  14. 14.Half of 62 =
  15. 15.Half of 182 =
  16. 16.Half of 176 =
  17. 17.Double 13 =
  18. 18.Double 42 =
  19. 19.Double 12 =
  20. 20.Double 91 =
  21. 21.Double 77 =
  22. 22.Double 55 =
  23. 23.Double 14 =
  24. 24.Double 32 =
  25. 25.Half of 76 =
  26. 26.Half of 94 =
  27. 27.Double 51 =
  28. 28.Half of 66 =
  29. 29.Double 45 =
  30. 30.Double 33 =
  31. 31.Double 94 =
  32. 32.Double 16 =
  33. 33.Double 82 =
  34. 34.Half of 164 =
  35. 35.Half of 144 =
  36. 36.Double 59 =
  37. 37.Half of 132 =
  38. 38.Half of 152 =
  39. 39.Half of 82 =
  40. 40.Half of 148 =

Answer key

  1. 32
  2. 94
  3. 130
  4. 92
  5. 162
  6. 13
  7. 39
  8. 56
  9. 136
  10. 48
  11. 98
  12. 23
  13. 28
  14. 31
  15. 91
  16. 88
  17. 26
  18. 84
  19. 24
  20. 182
  21. 154
  22. 110
  23. 28
  24. 64
  25. 38
  26. 47
  27. 102
  28. 33
  29. 90
  30. 66
  31. 188
  32. 32
  33. 164
  34. 82
  35. 72
  36. 118
  37. 66
  38. 76
  39. 41
  40. 74

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