Lesson 17 Homework 3ͻ7

Lesson 17: Use all four operations to solve problems involving perimeter and

unknown measurements.

Name Date

1. The shapes below are made up of rectangles. Label the unknown side lengths. Then, write and solve an

equation to find the perimeter of each shape.

7 m

2 in

6 in

5 cm

2 m

4 m

9 m

a.

P = ________

2 cm

8 cm

2 cm

6 cm

b.

P = ________

12 in

4 in

c.

P = ________

4 in

d.

8 ft

P = ________

7 ft

2 ft

3 ft

3 ft

1 ft

4 cm 3 cm

A STORY OF UNITS

83© 2014 Common Core, Inc. All rights reserved. commoncore.org

Lesson 17 Homework 3ͻ7

Lesson 17: Use all four operations to solve problems involving perimeter and

unknown measurements.

2. Sari draws and labels the squares and rectangle below. Find the perimeter of the new shape.

3. Label the unknown side lengths. Then, find the perimeter of the shaded rectangle.

5 in

8 in

2 in

18 in

a in

b in

6 cm 6 cm

18 cm

6 cm

A STORY OF UNITS

84© 2014 Common Core, Inc. All rights reserved. commoncore.org