What is 0.81315 as a fraction?

Numbers can be represented in a variety of ways including percentages, decimals, and fractions. The ability to convert any number from one format to another is an important math skill to have. These skills are typically thought in fifth grade math and require an understanding of place values and Greatest Common Factor (GCF).

In this article, we teach those skills step by step while demonstrating how to convert decimal 0.81315 into a fraction.

Answer: 0.81315 as a fraction equals 81315/100000 or 16263/20000

Here is the solution for converting 0.81315 to a fraction:

Step 1:

First, we write 0.81315 as  
0.81315/1

Step 2:

Next, we multiply both the numerator and denominator by 10 for each digit after the decimal point. Remember the numerator is the top part of the fraction and the denominator is the bottom part!
0.81315/1
  =  
0.81315 x 100000/1 x 100000
  =  
81315/100000


Step 3:

Next, we find the Greatest Common Factor (GCF) for 81315 and 100000. A factor is a number that divides into another number without any remainder.

The factors of 81315 are: 1  3  5  9  13  15  39  45  65  117  139  195  417  585  695  1251  1807  2085  5421  6255  9035  16263  27105  81315 
The factors of 100000 are: 1  2  4  5  8  10  16  20  25  32  40  50  80  100  125  160  200  250  400  500  625  800  1000  1250  2000  2500  3125  4000  5000  6250  10000  12500  20000  25000  50000  100000 
So for 81315 and 100000 that gives us a GCF value of: 5

Step 4:

For the last step we reduce the fraction. This just means writing the fraction in the simplest way. To do this we divide both the numerator and denominator by the GCF value we determined in step 3.
81315/100000
  =  
81315 ÷ 5/100000 ÷ 5
  =  
16263/20000


Good work! We have just walked through the steps on how to represent 0.81315 as a fraction.

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