Ohio STANDARDS PAGE REFERENCES THE NUMBER SYSTEM 8.NS Know that are numbers that are not rational, and approximate them by rational numbers. 1. Know that numbers that are not rational are 7–14, 89–96 called irrational. Understand informally that 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. 2. Use rational approximations of irrational 79–80, 81–88, 89–96 numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (e.g., For example, by truncating the decimal π2). expansion of show that is between 1 and 2, √2, √2 then between 1.4 and 1.5, and explain how to continue on to get better approximations. STANDARDS PAGE REFERENCES
Ohio STANDARDS PAGE REFERENCES THE NUMBER SYSTEM 8.NS Know that are numbers that are not rational, and approximate them by rational numbers. 1. Know that numbers that are not rational are called irrational. Understand informally that 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. 7–14, 89–96 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 (e.g., π2). 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. 79–80, 81–88, 89–96 STANDARDS PAGE REFERENCES
OH%20Glencoe%20Math%20C3%20Grade%208.docx