Lesson 8
Octal Arithmetic
The sum gets a bonus
Page 282
Your answer :
7
6
58
2
7
38
4,
3
2
18
+
7
7
28
+
6
6
68
+
4,
4
4
48
1,
7
5
78
1,
1
6
18
1
0,
7
6
58
⎫⎪⎬⎪⎭This set contains a mistake.
Here they are, showing the carries explicitly:
carries →
1
1
1
1
1
1
7
6
58
2
7
38
4
3
2
18
7
7
28
6
6
68
4
4
4
48
1,
7
5
78
1,
1
6
18
1
0,
7
6
58
They’re all correct. Return to page 270 and look again.
