Area

Area is a measurement of the size of a surface or region. It is commonly expressed in square units, such as square meters (m²) or square feet (ft²).

Calculating Area

The formula for calculating the area of a rectangle is:

Area = length x width

For example, if a rectangle has a length of 5 meters and a width of 3 meters, the area would be:

Area = 5m x 3m = 15m²

The formula for calculating the area of a square is:

Area = side length x side length

For example, if a square has a side length of 4 meters, the area would be:

Area = 4m x 4m = 16m²

Other Shapes

For other shapes, such as triangles, circles, and irregular shapes, there are specific formulas for calculating their areas. For example, the area of a triangle can be calculated using the formula:

Area = 0.5 x base x height

Real-world Applications

Understanding area is important for various real-world applications, such as measuring the size of a room, determining the amount of paint needed to cover a wall, or calculating the space needed for a garden.

◂Math Worksheets and Study Guides Third Grade. 3 Digit Subtraction

The resources above cover the following skills:

Number and Operations (NCTM)

Compute fluently and make reasonable estimates.

Develop fluency in adding, subtracting, multiplying, and dividing whole numbers.

Select appropriate methods and tools for computing with whole numbers from among mental computation, estimation, calculators, and paper and pencil according to the context and nature of the computation and use the selected method or tools.

Algebra (NCTM)

Use mathematical models to represent and understand quantitative relationships.

Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.

Connections to the Grade 3 Focal Points (NCTM)

Number and Operations: Building on their work in grade 2, students extend their understanding of place value to numbers up to 10,000 in various contexts. Students also apply this understanding to the task of representing numbers in different equivalent forms (e.g., expanded notation). They develop their understanding of numbers by building their facility with mental computation (addition and subtraction in special cases, such as 2,500 + 6,000 and 9,000 - 5,000), by using computational estimation, and by performing paper-and-pencil computations.

Area

Calculating Area

Other Shapes

Real-world Applications

[Area] Related Worksheets and Study Guides:

◂Math Worksheets and Study Guides Third Grade. 3 Digit Subtraction

The resources above cover the following skills: