Curriculum placement
Grade 3. This describes the skill, not a learner estimate.
Area of a rectangle
Find rectangular area by counting unit squares or multiplying sides
Problem types
- Rectangle area
- Area by splitting a rectangle
- Count the tiles, then multiply
- Count both sides of a split rectangle
- Which split matches the sum
- Cut an L into two rectangles
- Which cut makes two rectangles
- Area of one unit square
- Which figure is a unit square
- Count the unit squares in a region
- Which covering measures the area
Builds on
- Measuring area by counting squares
- One-digit multiplication facts
- Rectangular arrays
- Measuring length with equal units · Useful idea
Area covers a rectangle with equal unit squares, so counting rows of equal squares gives the area.
Leads to
- Fractions of an area
- Area and perimeter problems
- Volume in unit cubes
- Area of triangles and other polygons
- Multiplying with partial products · Extend the idea
Splitting a rectangle into parts shows a product as a sum of partial products.
- Side lengths from coordinates · See it applied
The area of a rectangle drawn on a grid is its width times its height, read from the coordinates of the vertices.
Related skills
- Patterns in the operations · Shared foundations
- Quotients from related facts · Shared foundations
- Generating equivalent fractions · Shared foundations
- Equal multiplication and division equations · Shared foundations
- Multiplying by a multiple of 10 · Shared foundations
Open the interactive map to explore lessons and skill connections.