Grade 2 · Operations and Algebraic Thinking

CCSS.MATH.CONTENT.2.OA.C.4

Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

Read this standard on the official Common Core site

Lessons that teach this standard

• Arrays: Rows, Columns and Equal Groups

  Grade 2: find the total in an array by adding equal rows or columns, write it as a sum like 4 + 4 + 4, and count the squares in a rectangle cut into rows and columns.