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## Texas Go Math Grade 3 Module 17 Assessment Answer Key

**Vocabulary**

**Choose the best term from the box.**

**Vocabulary**

area

perimeter

Question 1.

The distance around a figure is the ___________ . (p. 545)

Answer:

The distance around the figure is called as perimeter.

**Concepts and Skills**

**Find the perimeter of the figure. Each unit is 1 centimeter. (TEKS 3.7.B)**

Question 2.

____________ centimeters

Answer:

Explanation:

Perimeter the given figure is 15 units

As 1 unit is equal to 1 cm

The perimeter fo the given figure is 15 centimeters.

Question 3.

____________ centimeters

Answer:

Explanation:

Perimeter the given figure is 14 units

As 1 unit is equal to 1 cm

The perimeter fo the given figure is 14 centimeters.

**Find the unknown side lengths.**

Question 4.

Perimeter = 33 centimeters

g = __________ centimeters

Answer:

g = 3 cm

Explanation:

The perimeter is 33 centimeters

The sum of the sides I know is 30 centimeters

A related subtraction equation is

g = 33-30

So, the length of side g is 3 centimeters.

Question 5.

Perimeter = 32 feet

k = ___________ feet

Answer:

k = 4 feet

Explanation:

Explanation:

We know that perimeter of the rectangle is 32 feet

The sum of lengths of the sides i know is 12+12=24

Subtract the lengths from the perimeter, 32-24=8

Divide the difference by 2

8 ÷ 2 = 4

The length of the other side is 4 feet

Therefore, k=4 feet

Question 6.

Use a centimeter ruler to find the perimeter. (TEKS 3.7.B)

___________ centimeters

Answer:

Explanation:

Add the lengths of all the sides to find the perimeter

10+6+4+6+2+4=32

Therefore, the perimeter of the given figure is 32 centimeter.

**Fill in the bubble for the correct answer choice.**

Question 7.

Jacob built a toolbox with a perimeter of 70 inches. What is the length of side m? (TEKS 3..7.B)

(A) 50 inches

(B) 20 inches

(C) 25 inches

(D) 10 inches

Answer:

C. 25 inches

Explanation:

We know that perimeter of the rectangle is 70 inches

The sum of lengths of the sides i know is 10+10=20

Subtract the lengths from the perimeter, 70-20=50

Divide the difference by 2

50 ÷ 2 = 25

The length of the other side is 25 inches

Therefore, m = 25 inches

Question 8.

Adrienne is decorating a square picture frame. She glued 32 inches of ribbon around the edge of the frame. What is the length of each side of the picture frame? (TEKS 3.7.B)

(A) 4 inches

(B) 8 inches

(C) 28 inches

(D) 16 inches

Answer:

B. 8 inches

Explanation:

Adrienne is decorating a square picture frame.

She glued 32 inches of ribbon around the edge of the frame

So, perimeter of picture frame is 32 inches

Perimeter of a square is 4 x length of side

So, 4 x a = 32 then a = 32÷ 4

a=8

Therefore, the length of each side of the picture frame is 8 inches.

Question 9.

What is the perimeter of the figure? Each unit is 1 centimeter. (TEKS 3.7.B)

Answer:

Explanation:

Perimeter the given figure is 18 units

As 1 unit is equal to 1 cm

The perimeter fo the given figure is 18 centimeters.

Question 10.

Jeff is making a poster for a car wash for the Campout Club. What is the perimeter of the poster? (TEKS 3.7.B)

(A) 8 feet

(B) 3 feet

(C) 6 feet

(D) 4 feet

Answer:

A. 8 feet

Explanation:

Jeff is making a poster for a car wash for the Campout Club

Perimeter fo a figure is sum of all its sides

The sum of the sides of the poster is 1+3+1+3=8 feet

therefore, Perimeter of the poster is 8 feet.

Question 11.

A rectangle has side lengths of 8 inches and 10 inches. What is the perimeter of the rectangle? (TEKS 3.7.B)

(A) 28 inches

(B) 18 inches

(C) 32 inches

(D) 36 inches

Answer:

D. 36inches

Explanation:

A rectangle has side lengths of 8 inches and 10 inches

Perimeter fo a rectangle is sum of all its sides

Sum of all the sides of given rectangle is 8+10+8+10= 36 in

Therefore, preimeter fo the given rectangle is 36 inches.