3rd Grade Math

Front

What is area?

Back

Area is the amount of space inside a shape, measured in square units.

Front

What is perimeter?

Back

Perimeter is the distance around a shape, calculated by adding the lengths of all its sides.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

If a rectangle has a length of 7m and a width of 4m, what is its area?

Back

Area = 7m × 4m = 28m².

Front

If a rectangle has a perimeter of 24cm, what is the length of each side if it is a square?

Back

Each side = 24cm ÷ 4 = 6cm.

Front

What is the area of a rectangle that is 12 feet long and 8 feet wide?

Back

Area = 12ft × 8ft = 96ft².

Front

If the area of a rectangle is 40 ft² and the length is 5 ft, what is the width?

Back

Width = Area ÷ Length = 40ft² ÷ 5ft = 8ft.

Front

What is the formula for finding the area of a square?

Back

Area = side × side.

Front

What is the formula for finding the perimeter of a square?

Back

Perimeter = 4 × side.