Arithmetic of Computers

Arithmetic of Computers

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Lesson 8

Octal Arithmetic

The sum gets a bonus

Page 281

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Your answer :
3
You are correct. What we have so far is .2568 = .33…10 Now let’s get the next digit.
.2568  ×  128 .5348 2.568  1st complete product →  3.3148  ×  128 .6308 3.148  2nd complete product →  3.7708  ×  128 1.7608 7.708  3rd complete product →  11.6608
Now look what’s happened! The integral part of our 3rd complete product, which is supposed to be the 3rd digit of our decimal fraction, is a two-digit number. What do we use for the next digit of our decimal number?
Answer :
.2568 = .331…10

Go to Page 263

.2568 = .3311…10

Go to Page 272

.2568 = .339…10

Go to Page 274

Answer to Self-Test Question 5, Lesson 8 :
a. .304 rounded to .30; b. .417 rounded to .42; c. .673 rounded to .67

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