### Arithmetic of Computers

#### from Tenscope Limited

By using this site, you are accepting "session" cookies, as set out in the site's Privacy Policy
Cookies are also used to remember which page of the book you last viewed, so that when you revisit the site you automatically return to the last page you visited.

### Self-Test Questions : Lesson 7

#### Decimals to Octals

##### . . . and back again

1.
What is the remainder when 69 is divided by 6?

2.
When you divide a number by 8, may this be the first step in converting octal to decimal, or decimal to octal?

3.
In converting from decimal to octal, the remainders after repeated division by 8 form the digits of the octal number. In what order are the remainders written as the digits of the octal number?

4.
Convert to octal:
a. 423
b. 500
c. 3333

5.
Convert the following decimal fractions to octal fractions:
a. .125
b. .015625

6.
Round off these octal fractions to the second place:
a. .4448
b. .3628
c. .6568
d. .1248

7.
Convert these decimal fractions to octals, rounding off to the third place:
a. .598
b. .138
c. .005

Now go on to Lesson 8 on Page 259.