What is 0.686 as a fraction?

Numbers can be expressed in multiple formats, including percentages, decimals, and fractions. Each of these representations serves a unique purpose in mathematics, and being able to convert between them is an essential skill. Understanding these conversions is particularly important in real-life applications, such as measuring ingredients in cooking, calculating discounts while shopping, or understanding probability in statistics.

Typically, the ability to switch between decimals and fractions is introduced in fifth-grade mathematics, where students learn about place values, division, and the concept of the Greatest Common Factor (GCF). These fundamental concepts allow for simplifying fractions, ensuring that numerical expressions remain accurate and easy to interpret.

In this article, we will guide you step by step through the process of converting the decimal 0.686 into a fraction. We will start by understanding how decimals represent parts of a whole, then break down the steps to rewrite them as fractions. Finally, we will simplify the fraction by identifying and applying the Greatest Common Factor, ensuring the result is in its simplest form.

By the end of this guide, you will have a strong understanding of decimal-to-fraction conversions and be able to apply this knowledge to various mathematical problems. Let's begin!

Answer: 0.686 as a fraction equals 686/1000 or 343/500

Here’s a clear and detailed solution for converting 0.686 to a fraction:

Step 1:

First, we can write 0.686 as
0.686/1

Step 2:

Next, we multiply both the numerator and denominator by 10 for each digit after the decimal point.
0.686 × 1000/1 × 1000
686/1000

Step 3:

Next, we find the Greatest Common Factor (GCF) for 686 and 1000.
The factors of 686 are: 1 2 7 14 49 98 343 686
The factors of 1000 are: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000
The GCF of 686 and 1000 is: 2.

Step 4:

To simplify the fraction, we divide both the numerator and denominator by the GCF.
686 ÷ 2/1000 ÷ 2
343/500


Great job! We've successfully converted 0.686 into a fraction.

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