Grade 2 · Operations and Algebraic Thinking

CCSS.MATH.CONTENT.2.OA.C.3

Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.

Read this standard on the official Common Core site

Lessons that teach this standard

• Odd and Even Numbers

  Second grade: tell whether a group of up to 20 objects is odd or even by pairing them or counting by 2s, and write an even number as a double, like 12 = 6 + 6.