Into Math Grade 3 Module 11 Lesson 2 Answer Key Find Perimeter

We included HMH Into Math Grade 3 Answer Key PDF Module 11 Lesson 2 Find Perimeter to make students experts in learning maths.

HMH Into Math Grade 3 Module 11 Lesson 2 Answer Key Find Perimeter

I Can measure the lengths of the sides of polygons using inch or centimeter units to find the perimeter of a polygon. I can add side lengths to find the perimeter.

Spark Your Learning

Use some tiles to make a figure. Draw a line around the figure. How can you find the distance around the figure?

Show a way to find the length of each side.
Answer:

Explanation:
perimeter of a irregular polygon = sum of all sides
p = 3 + 4 + 1 + 1 + 2
p = 11 units.

Turn and Talk What strategy did you use to find the perimeter of the figure?
Answer:
I used the irregular polygon perimeter formula
p = sum of all sides.

Build Understanding

Question 1.
Eric is making labels for his science poster. He wants to glue a piece of yarn around the sides of each label.


A. How can you find the length of yarn, in inches, that Eric needs for each label?
Answer:

perimeter of above picture = 4 x s
as it is in square
p = 4 x 4
p = 16 inches

perimeter of above picture = 2 (l + b)
as it is in shape of rectangle
p = 2 (8 + 3)
p = 2 x 11
p = 22 inches.

B. What equation can you write to find the length of yarn that Eric needs? How long is the piece of yarn?
Answer:
perimeter of above picture = 2 (l + b)
as it is in shape of rectangle
p = 2 (8 + 3)
p = 2 x 11
p = 22 inches. is the piece of yarn that Eric need.

Question 2.
Rhonda has an alligator sticker.

A. How can Rhonda find the perimeter of her sticker in centimeters?
Answer:

Explanation:
perimeter of a rectangle = 2 (l + b)
p = 2 (3 + 9)
p = 2 x 12
p = 24 cm.

B. What equation can you write to find the perimeter?
Answer:
perimeter of a rectangle = 2 (l + b)

Step It Out

Question 3.
Mrs. Lopez is making quilt pieces. She wants to sew ribbon around the sides of each quilt piece.

A. Use a centimeter ruler to measure the length of each side.
Answer:

perimeter of a rectangle = 2 (l + b)
p = 2 (5 + 6)
p = 2 x 11
p = 22 centimeters

B. Add the lengths of the sides.

Answer:

C. What is the length of ribbon she needs for each quilt piece?
Answer:
perimeter = sum of all sides
p = 3 + 6 + 6 + 3 + 3 + 3
p = 12 + 12
p = 24 centimeters.

Turn and Talk How does knowing the length of each side help you know the perimeter?
Answer:
BY the help of ruler we got to know the length of each side.

Check Understanding

Use a ruler to measure each side to the nearest inch or centimeter. Find the perimeter.

Question 1.

Answer:

Explanation:

Question 2.

Answer:

Explanation:

On Your Own

Question 3.
Reason Manny is cutting rectangular slate tiles for a walkway. A tile has side lengths of 8 inches and 6 inches. Describe how to find the perimeter of a tile.
Answer:
Explanation:
As the length and width are given
formula for a rectangle p = 2(l + b)
p = 2 (8 + 6)
p = 2 x 14
p = 28 inches.

Use a centimeter ruler to measure each side to the nearest centimeter. Find the perimeter.

Question 4.

Answer:

Explanation:
the continuous line forming the boundary of a closed geometrical figure.
“the perimeter of a rectangle”
perimeter of a rectangle = 2 (l + b)
p = 2 x (3 + 4)
p = 2 x 7
p = 14 cm

Question 5.

Answer:

Explanation:

Question 6.
Open-Ended Write a word problem about finding the perimeter of this painting. Solve your word problem.

Answer:
Miss. Rosy saw a poster on a show. she is measuring the length of the poster. To check whether it fits to her wall or not? Find the perimeter of the poster?
Explanation:
perimeter of rectangle p = 2 (l + b)
p = 2(18 + 20)
p = 2 x 38
p = 76

I’m in a Learning Mindset!

How am I responding to the change from counting units to using a ruler to find perimeter?
Answer:
We can visualize the ruler directly
so, we can count the units fast.