Lesson 13 Homework 3 7
A STORY OF UNITS
Name
Date
1. Find the perimeters of the shapes below. Include the units in your number sentences. Match the letter
inside each shape to its perimeter to solve the riddle. The first one has been done for you.
7 cm
6 ft
6 ft
7 in
7 in
q
5 cm
r
9 ft
7 in
5 cm
s
9 ft
7 cm
6 ft
P = 7 in + 7 in + 7 in
P = 21 in
5 yd
8 cm
4 in
4 in
7 yd
7 yd
a
5 cm
m
4 in
9 yd
5 cm
4 in
8 cm
7m
4m
u
3m
e
4m
2m
l
3m
2m
6m
4m
What kind of meals do math teachers eat?
_____ _____ _____ _____ _____ _____
24
21
20
28
Lesson 13:
36
26
_____ _____ _____ _____ _____ !
16
26
28
15
24
Explore perimeter as an attribute of plane figures and solve problems.
64
© 2014 Common Core, Inc. All rights reserved. commoncore.org
Lesson 13 Homework 3 7
A STORY OF UNITS
2. Alicia’s rectangular garden is 33 feet long and 47 feet wide. What is the perimeter of Alicia’s garden?
47 ft
33 ft
33 ft
47 ft
3. Jaques measured the side lengths of the shape below.
4 in
3 in
5 in
2 in
5 in
4 in
3 in
7 in
a. Find the perimeter of Jaques’ shape.
b. Jaques says his shape is an octagon. Is he right? Why or why not?
Lesson 13:
Explore perimeter as an attribute of plane figures and solve problems.
65
© 2014 Common Core, Inc. All rights reserved. commoncore.org