Arithmetic of Computers

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Lesson 8

Octal Arithmetic

The sum gets a bonus

Page 280

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Your answer :

353₈ + 462₈ = 835₈.

You did all right until you summed the left-hand column and wrote the result in decimal rather than octal.

1 ← carried from 2nd column 3 5 3₈ 4 6 2₈ ? 3 5₈

You wouldn’t have done this if you had remembered there can’t be an 8 in an octal number.

Return to Page 275 and try again.