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STANDARDS

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US-TN

Math

Tennessee Math

Grade 8: The Number System (NS)

8.NS.A.2

Fully covered
Use rational approximations of irrational numbers to compare the size of irrational numbers by locating them approximately on a number line diagram. Estimate the value of irrational expressions (such as π^2). For example, by truncating the decimal expansion of √2, show that √2 is between 1 and 2, then between 1.4 and 1.5, and explain how to continue on to get better approximations.