Arithmetic of Computers

Arithmetic of Computers

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Self-Test Questions : Lesson 8

Octal Arithmetic

The sum gets a bonus
 
1.
Add:
a. 48 + 68
b. 58 + 78
c. 68 + 58
d. 38 + 58

Go to Page 259

2.
Here’s some practice in octal addition:
a. 4238  + 6458
b. 2648  + 3758
c. 5278  + 6738
d. 6738  + 5478

Go to Page 275

3.
Multiply by 128:
a. 5478
b. 3648
c. 2568
d. 3178
e. 4278

Go to Page 267

4.
In converting an octal fraction to decimal, if you use the method of repeated multiplication by 128, are the digits of the answer taken from the partial products, or the complete products?

Go to Page 273

5.
Convert these octal fractions to 2-place decimals, using multiplication:
a. .2348
b. .3268
c. .5318

Go to Page 281

6.
In converting octal fractions to decimals by multiplication, what do you do when an integral part of a complete product is 118?

Go to Page 274

 

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