What is 3.124 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 3.124 into a fraction.

Answer: 3.124 as a fraction equals 3124/1000 or 781/250

Here is the solution for converting 3.124 to a fraction:

Step 1:

First, we write 3.124 as  
3.124/1

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!
3.124/1
  =  
3.124 x 1000/1 x 1000
  =  
3124/1000


Step 3:

Next, we find the Greatest Common Factor (GCF) for 3124 and 1000. A factor is a number that divides into another number without any remainder.

The factors of 3124 are: 1  2  4  11  22  44  71  142  284  781  1562  3124 
The factors of 1000 are: 1  2  4  5  8  10  20  25  40  50  100  125  200  250  500  1000 
So for 3124 and 1000 that gives us a GCF value of: 4

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.
3124/1000
  =  
3124 ÷ 4/1000 ÷ 4
  =  
781/250


Good work! We have just walked through the steps on how to represent 3.124 as a fraction.

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