This is my fourth article on octal arithmetic. In this article I am going to solve some examples on octal division. This is very easy task and principles and rules of division remain same. Here are articles on octal number systems. These articles provide tutorials on mathematical operations on octal number systems which includes octal numbers addition,octal numbers subtraction and octal numbers multiplication.
Key Questions:
  • How to perform division in octal numbers system?
  • How to perform fractional octal numbers division

Division In Octal Number System (Solved Examples):

To solve division examples you must know how to perform multiplication on octal numbers. I will solve examples on each case. First case in which dividend and divisor both are integers. Second case in which dividend has an octal point and divisor is an integer. Third case in which both dividend and divisor both have floating point numbers. You can check your results by using this online converter.
Example#01:6573)8÷16)8
First we make a table for 16 and it’s multiples.
Decimal
Octal
16*1
16
14
16*2
32
34
16*3
48
52
16*4
64
70
16*5
80
106
16*6
96
124
          366.4
16 ⟌6573
        52
        137
        124
          133
          124
              70
               70
               XX
Answer:366.4)8

Example#02:457.43)8÷7)8
First make a table for 7 and it’s multiples
Decimal
Octal
7*1
7
7
7*2
14
16
7*3
21
25
7*4
28
34
7*5
35
43
7*6
42
52
7*7
49
61
       53.27
7 ⟌457.43
      43
        27
        25
          24
          16
             63
              61
              2
Answer:53.27)8

Example#03:737.72)8÷1.2)8
Shifting octal point makes the problem easy. According to mathematical rule shifting octal point of numerator upto one place then you have to shift octal point of denominator upto one place as well.
7377.2)8÷12)8
After shifting octal point divisor/denominator is free from octal point.
Let’s make table for 12 and it’s multiples.
Decimal
Octal
12*1
12
10
12*2
24
22
12*3
36
34
12*4
48
50
12*5
60
62
12*6
72
74
12*7
84
106
         577.73
12 ⟌7377.2
        62
        117
        106
          117
          106
             112
             106
                40
                36
                  2
        
Answer:577.73)8

Comments (13)

  1. Anonymous

    Reply

    Brother in example 2 in last second step you marked 63 ,it's not 63 it's 83 please review your answer

  2. Reply

    Hi! Thank you so much for this article. I have a question tho, is it always required to take away 2 when multiplying by one? I didn't quite understand when 16*1 = 14 and 12 * 1 = 10 compared to 7*1 = 7.

  3. Anonymous

    Reply

    il a parfaitement raison car 16 et12 ne sont pas des nombres octaux, essayez de réfléchir et vous trouverez une réponse

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