Area of shapes made of smaller shapes

Answer Key - Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   Bo's paper cut-out is an L-shape. A dashed line cuts it into two rectangles, drawn on the grid. The scissors need a nap. What is its area in square inches?

   16.5
2. 2.

   Jun's lawn is an L-shape. A dashed line cuts it into two rectangles, drawn on the grid. A squirrel is inspecting it. What is its area in square meters?

   32
3. 3.

   Kira's mural is an L-shape. A dashed line cuts it into two rectangles, drawn on the grid. The paint is still wet. Probably. What is its area in square meters?

   3.6
4. 4.

   Luz's vegetable patch is an L-shape. It sits inside a box, and the missing corner is shaded on the grid. The carrots are lining up. What is its area in square meters?

   17
5. 5.

   Noah's lawn is an L-shape. It sits inside a box, and the missing corner is shaded on the grid. The ducks want a closer look. What is its area in square meters?

   12.25

6. Read this first

   Use this

   Grid, each square 0.4 ft by 0.4 ft. L-shape inside a dashed box 3.2 ft wide and 2.4 ft tall. The missing corner, shaded at the top right, is 1.2 ft wide and 0.8 ft tall.

7. 6.

   Pia's quilt patch is an L-shape. It sits inside a box, and the missing corner is shaded on the grid. The thread tangled itself. What is its area in square feet?

   6.72
8. 7.

   Ren's sunflower patch is an L-shape. It sits inside a box, and the missing corner is shaded on the grid. The sunflowers face the sun. What is its area in square meters?

   27.5
9. 8.

   Zee's flower bed is a rectangle with a triangle on top. The triangle is half of the dashed rectangle around it. The tulips are in a hurry. What is its area in square meters?

   27
10. 9.

    Bo's garden bed is a rectangle with a triangle on top. The triangle is half of the dashed rectangle around it. The worms called it cozy. What is its area in square meters?

    4.8
11. 10.

    Esme's mural is a rectangle with a triangle on top. The triangle is half of the dashed rectangle around it. It has a lot of sky. What is its area in square meters?

    54