Area of shapes made of smaller shapes

Answer Key - Grade 7 Math Worksheet - Challenge Me

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

1. 1.

   Zee's mural has a rectangle in the middle and a triangle at each end. It points at something. What is its area in square meters?

   35.64
2. 2.

   Ari's paper pennant has a rectangle in the middle and a triangle at each end. It would like to wave. What is its area in square cm?

   80
3. 3.

   Bo's lawn is an L-shape. Two of its sides are not labeled. The sprinkler took a shortcut. What is its area in square meters?

   47
4. 4.

   Kira paints a wall with a window that stays unpainted. Each square meter of wall needs 0.2 liters of paint. The brush is very excited. How many liters of paint does the wall need?

   1.89
5. 5.

   Luz's flower bed is a rectangle with a missing corner. Each square meter needs 40 liters of mulch. The mulch pile is enormous. How many liters of mulch does it need?

   880
6. 6.

   Noah's garden bed is a rectangle with a triangle on top. Each square meter needs 25 g of plant food. The beans are hungry. How many grams of plant food does it need?

   432
7. 7.

   Pia's house-shaped mural is a rectangle with a triangle on top. Each square meter needs 0.2 liters of paint. The roof corner is a tricky one. How many liters of paint does it need?

   4.32
8. 8.

   Ren's quilt patch is a rectangle with a triangle on top. Each square inch needs 12 sequins. It is going to sparkle. How many sequins does it need?

   756
9. 9.

   Zee's mural is a rectangle with a triangle on top. Its whole area is 28.2 square meters. The roof is a surprise. How tall is the triangle in meters?

   2.4
10. 10.

    Bo's lawn is a rectangle with a triangle on top. Its whole area is 33.75 square meters. A goose guards the point. How tall is the triangle in meters?

    5