Arithmetic of Computers

Self-Test Questions : Lesson 7

Decimals to Octals

. . . and back again

1.

What is the remainder when 69 is divided by 6?

Go to Page 227

2.

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

Go to Page 235

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?

Go to Page 243

4.

Convert to octal:

a. 423

b. 500

c. 3333

Go to Page 249

5.

Convert the following decimal fractions to octal fractions:

a. .125

b. .015625

Go to Page 242

6.

Round off these octal fractions to the second place:

a. .444₈

b. .362₈

c. .656₈

d. .124₈

Go to Page 253

7.

Convert these decimal fractions to octals, rounding off to the third place:

a. .598

b. .138

c. .005

Go to Page 244

Now go on to Lesson 8 on Page 259.