Grade 3 · Measurement and Data

CCSS.MATH.CONTENT.3.MD.C.7d

Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.

Read this standard on the official Common Core site

Lessons that teach this standard

• Area of a Rectangle: Length Times Width

  Why the area of a rectangle is length times width, how to find a missing side, why area uses square units, and how to handle L-shaped figures.