Fencing the Farm: Perimeter of Animal Pens worksheet preview

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Fencing the Farm: Perimeter of Animal Pens

Grade 3 perimeter practice with farm animal pens: add side lengths of polygons and find a missing side when the perimeter is known.

Grade 3MathInteractive · Printable

Aligned to3.MD.D.8

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 3
Subject: Math
Question types: Fill in the blank, Multiple choice, Matching, Sorting, Short answer

About this worksheet

What students practice

Students find the perimeter of polygons by adding all of the side lengths.
Students find an unknown side length when the perimeter and the other sides are known.

How to use

Use after introducing perimeter as the distance around a shape. Have students sketch each pen and label every side before they add or subtract.

Curriculum

Common Core standard covered

Solve problems about perimeters of polygons, including finding an unknown side length.

Preview

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Fencing the Farm: Perimeter of Animal Pens

Add the sides to find the perimeter, then find the missing side.

Fence around the pens

Find how much fence goes all the way around each pen.

1.

The goat pen is a rectangle. It is 9 feet long and 6 feet wide. How many feet of fence go all the way around it?

feet

2.

The chicken yard is a triangle. Its sides are 7 meters, 8 meters, and 5 meters long. What is its perimeter?

meters

3.

The fence around the duck pond has 5 straight sides. The sides are 4, 6, 3, 7, and 5 yards long. What is the perimeter?

yards

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