Lesson 8
Octal Arithmetic
The sum gets a bonus
Page 273
Did you forget to find the second partial product? That is, did you multiply by the 2 and forget to multiply by the 1 in front of it? The part we had done was:
.2568
×
128
1st partial products →
.5348
→
2.568
1st complete product →
3 .3148
Now we continue by multiplying the fractional part only of the first complete product by
128 :
1st complete product →
3 .3148
×
128
2nd partial products →
.6308
→
3.148
Sum the second partial products and you will have the second complete product. The integral part of the second complete product is the second digit in the decimal equivalent of .2568 .
Return to Page 262 and choose another answer.
Answer to Self-Test Question 4, Lesson 8 :
From the complete products.
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