Lesson 3 of 8 · Grades 3 to 6
Practice: Area of rectangles
Ten rectangle area questions: length times width, squares, missing sides, comparing areas and real shapes.
How to use this page
This page gives you ten more questions on the same idea as the lesson "Area of rectangles". Work through them at your own speed. Write your answer down or say it out loud before you open the answer box, so you give yourself a real chance to think.
If a question feels hard, go back to the lesson and look at the worked example again. Getting a question wrong is useful; it shows you the part that needs one more look.
Practice questions
Answer all ten questions in your notebook or in your head. Then open each answer to check your work.
-
A rectangle is 8 cm long and 4 cm wide. What is its area?
Show answer
32 cm². 8 × 4 = 32.
-
A rectangle is 12 m long and 5 m wide. What is its area?
Show answer
60 m². 12 × 5 = 60.
-
A square has sides of 7 cm. What is its area?
Show answer
49 cm². 7 × 7 = 49.
-
A rectangle has an area of 42 cm² and is 7 cm long. How wide is it?
Show answer
6 cm. 42 ÷ 7 = 6.
-
A rectangle has an area of 72 m² and a width of 8 m. How long is it?
Show answer
9 m. 72 ÷ 8 = 9.
-
A garden bed is 9 m long and 3 m wide. What is its area?
Show answer
27 m². 9 × 3 = 27.
-
A square has an area of 64 cm². How long is one side?
Show answer
8 cm. 8 × 8 = 64, so one side is 8 cm.
-
Which area is bigger: a 6 cm by 6 cm square or a 9 cm by 5 cm rectangle?
Show answer
The 9 cm by 5 cm rectangle. Its area is 45 cm², and the square is 36 cm².
-
A wall is 6 m long and 3 m tall. One tin of paint covers 9 m². How many tins cover the wall exactly?
Show answer
2 tins. The wall is 18 m², and 18 ÷ 9 = 2.
-
A rectangle is 14 m long and 2 m wide. What is its area?
Show answer
28 m². 14 × 2 = 28.