MCC8.NS.1 Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually, and convert a decimal expansion which repeats eventually into a rational number.
Students will learn how to convert repeating decimals into fractions.
This is a video that teaches how to change repeating decimals into fractions.
Source: Created by Robert Donaldson using the Explain Everything app for iPad.