## 8.NS.2

Grade / Level | Grade 8 |
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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. |