Area Flashcard - 3rd Grade

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length × width.

Front

If a rectangle has a length of 10 cm and a width of 4 cm, what is its area?

Back

40 square centimeters.

Front

What is the area of a square with a side length of 5 units?

Back

25 square units (Area = side × side).

Front

How do you find the area of a composite shape?

Back

Divide the shape into simpler shapes, calculate the area of each, and then sum them up.

Front

What is the area of a rectangle with a length of 8 ft and a width of 5 ft?

Back

40 square feet.

Front

If the area of a rectangle is 24 square units and the width is 3 units, what is the length?

Back

Length = Area ÷ Width = 24 ÷ 3 = 8 units.

Front

What is the area of a triangle with a base of 6 cm and a height of 4 cm?

Back

Area = 1/2 × base × height = 1/2 × 6 × 4 = 12 square centimeters.

Front

What is the relationship between area and units of measurement?

Back

Area is measured in square units (e.g., square centimeters, square feet).

Front

How does adding a row to a rectangular model affect its area?

Back

Adding a row increases the area by the width of the rectangle multiplied by the length of the new row.

Front

What is the area of a rectangle with a length of 7 m and a width of 3 m?

Back

21 square meters.