# Common Core

The Standards | Mathematics. CCSS.Math.Content.mathematics-glossary.glossary Glossary Addition and subtraction within 5, 10, 20, 100, or 1000.

Addition or subtraction of two whole numbers with whole number answers, and with sum or minuend in the range 0-5, 0-10, 0-20, or 0-100, respectively. Example: 8 + 2 = 10 is an addition within 10, 14 - 5 = 9 is a subtraction within 20, and 55 - 18 = 37 is a subtraction within 100. Additive inverses. Common Core State Standards - Resources. Educational standards describe what students should know and be able to do in each subject in each grade.

In California, the State Board of Education decides on the standards for all students, from kindergarten through high school. Since 2010, 45 states have adopted the same standards for English and math. These standards are called the Common Core State Standards (CCSS). Common Core State Standards Initiative | Home.