Self-Test Questions : Lesson 6
The Octal System
From eight to ten
1.
What decimal numbers are represented by these expressions?
a. 4(82) + 0(81) + 6(80)
b. 3(81) + 4(80)
c. 5(82) + 3(81) + 2(80)
d. 1(82) + 9(81) + 0(80)
2.
In 5348 how do we know which power of 8 the 5 multiplies?
3.
In 4938 what is the coefficient of 80 and what is the coefficient of 82?
4.
Convert to decimal numbers:
a.498
b.1538
c.248
d.308
e.2018
5.
What fractions are represented by the following?
a. 8 − 1
b. 8 − 2
c. 8 − 3
6.
What happens to the numbers 8 and 9 in the octal system?
7.
What octal numbers correspond to the numbers 1510 and 1610?
8.
What octal number comes after 578?
Turn to Lesson 7 on Page 221.
