Grade 1 · Operations and Algebraic Thinking

CCSS.MATH.CONTENT.1.OA.D.7

Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

Read this standard on the official Common Core site

Lessons that teach this standard

• The Equal Sign: True and False Number Sentences

  First grade: the equal sign means 'is the same as.' Check whether number sentences like 7 = 8 − 1 and 4 + 1 = 5 + 2 are true or false, and fill in missing numbers.