LAC 28:CXLII.1903. Numeracy and Operational Fluency

A. Know that there are numbers that are not rational, and approximate them by rational numbers. 1. Understand the real number system. a. Distinguish between rational and irrational numbers. b. Understand informally that every number has a decimal expansion. c. For rational numbers, show that the decimal expansion repeats eventually. d. Convert a decimal expansion that repeats eventually into a rational number by analyzing repeating patterns. 2. 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.