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8.NS.2

Grade / Level Grade 8
Domain The Number System
Cluster Know that there are numbers that are not rational, and approximate them by rational numbers.
Standard Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (e.g., p^2). For example, by truncating the decimal expansion of v2, show that v2 is between 1 and 2, then between 1.4 and 1.5, and explain how to continue on to get better approximations.

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