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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 568 · 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 132 =
  2. 2.Half of 186 =
  3. 3.Double 85 =
  4. 4.Double 58 =
  5. 5.Double 87 =
  6. 6.Half of 128 =
  7. 7.Double 76 =
  8. 8.Double 35 =
  9. 9.Double 56 =
  10. 10.Double 12 =
  11. 11.Double 45 =
  12. 12.Double 82 =
  13. 13.Double 24 =
  14. 14.Double 37 =
  15. 15.Double 92 =
  16. 16.Half of 12 =
  17. 17.Double 59 =
  18. 18.Half of 158 =
  19. 19.Half of 162 =
  20. 20.Half of 52 =
  21. 21.Double 47 =
  22. 22.Double 81 =
  23. 23.Double 55 =
  24. 24.Half of 198 =
  25. 25.Double 95 =
  26. 26.Half of 122 =
  27. 27.Double 54 =
  28. 28.Half of 108 =
  29. 29.Double 68 =
  30. 30.Double 99 =
  31. 31.Half of 38 =
  32. 32.Half of 192 =
  33. 33.Double 94 =
  34. 34.Half of 72 =
  35. 35.Half of 68 =
  36. 36.Double 62 =
  37. 37.Double 97 =
  38. 38.Double 83 =
  39. 39.Double 57 =
  40. 40.Double 96 =

Answer key

  1. 66
  2. 93
  3. 170
  4. 116
  5. 174
  6. 64
  7. 152
  8. 70
  9. 112
  10. 24
  11. 90
  12. 164
  13. 48
  14. 74
  15. 184
  16. 6
  17. 118
  18. 79
  19. 81
  20. 26
  21. 94
  22. 162
  23. 110
  24. 99
  25. 190
  26. 61
  27. 108
  28. 54
  29. 136
  30. 198
  31. 19
  32. 96
  33. 188
  34. 36
  35. 34
  36. 124
  37. 194
  38. 166
  39. 114
  40. 192

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