Grade 3 · Operations and Algebraic Thinking

CCSS.MATH.CONTENT.3.OA.D.8

Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

Read this standard on the official Common Core site

Lessons that teach this standard

• Times as Many: Comparison and Multi-Step Word Problems

  How to read a times-as-many comparison, tell it apart from a more-than comparison, and work a multi-step word problem by writing an equation for each step.