3rd Grade: Area and Perimeter

Front

What is the definition of perimeter?

Back

Perimeter is the total distance around the outside of a shape.

Front

How do you calculate the perimeter of a rectangle?

Back

Add the lengths of all four sides or use the formula: P = 2(length + width).

Tags

CCSS.4.MD.A.3

Front

What is the definition of area?

Back

Area is the amount of space inside a shape.

Front

How do you calculate the area of a rectangle?

Back

Multiply the length by the width: A = length × width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the formula for the area of a square?

Back

A = side × side or A = side².

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a rectangle has a length of 5 cm and a width of 3 cm, what is its area?

Back

15 square centimeters.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a rectangle has a length of 8 feet and a width of 4 feet, what is its perimeter?

Back

24 feet.

Tags

CCSS.4.MD.A.3

Front

What do you do to find the perimeter of a shape?

Back

You add the lengths of all the sides together.

Tags

CCSS.3.MD.D.8

Front

What is the perimeter of a trapezoid with sides measuring 5 ft, 7 ft, 4 ft, and 3 ft?

Back

19 feet.

Tags

CCSS.3.MD.D.8

Front

What is the area of a rectangle with a length of 6 cm and a width of 10 cm?

Back

60 square centimeters.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3