Refer to our Texas Go Math Grade 3 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 3 Lesson 6.4 Answer Key Model with Arrays.

## Texas Go Math Grade 3 Lesson 6.4 Answer Key Model with Arrays

**Essential Question**

How con you use arrays to model multiplication and find factors?

Answer:

Arrays (Rectangles and Area) is another common and important model for multiplication.

Explanation:

An array is a way of arranging the the repeated sets so that you can either count along rows or up and down along columns.

For example,

2 rows of 10.

**Unlock the Problem**

Many people grow tomatoes in their gardens. Lee plants 3 rows of tomato plants with 6 plants in each row. How many tomato plants are there?

Answer: 18

Explanation:

Lee plants 3 rows of tomato plants with 6 plants in each row.

Total tomato plants 3 x 6 = 18

**Activity 1**

Materials square tiles Math Board

- You make an array by placing the same number of tiles in each row, Make an array with 3 rows of 6 tiles to show the tomato plants.
- Now draw the array you made.
- Find the total number of tiles.

So, there are _12_ tomato plants.

**Math talk**

**Mathematical Processes**

Does the number of tiles change if you turn the array to show 6 rows of 3? Explain.

Answer:

No, number of tiles wont change.

Explanation:

The number of tiles change if you turn the array to show 6 rows of 3

6 x 3 = 18

**Activity 2**

Materials square tiles Math Board

Use 8 tiles. Make as many different arrays as you can, using all 8 tiles. Draw the arrays. The first one is done for you.

A.

1 row of 8

1 × 8 = 8

B.

8 rows of __1__

8 x 1 = __ 8

8 × _1_ = 8

C.

__ rows of ___

___ × ___ = 8

4 rows of 2

4 x2 = 8

D.

__ rows of ___

___ × __ = ____

2 rows of 4

2 x 4 = 8

You can make ___ different arrays using 8 tiles.

Explanation:

A multiplication array is simply an arrangement of rows or columns that matches a multiplication equation.

**Share and Show**

Question 1.

Complete. Use the array.

___ rows of ___ = ___

___ × ___ = __

2 rows of 10 = 20

2 x 10 = 20

**Write a multiplication sentence for the array.**

Question 2.

Answer: 24

4 x 6 = 24

Explanation:

4 rows of 6

Question 3.

Answer: 24

3 x 8 = 24

Explanation:

3 rows of 8

**Problem Solving**

**Use the table to solve 4—6.**

Question 4.

**Representations** Mr. Bloom grows vegetables in his garden. Draw an array and write the multiplication sentence to show how many corn plants Mr. Bloom has in his garden.

Answer:

5 rows of 9

5 x 9 = 45

Explanation:

Mr. Bloom grows 5 rows of 9 corns.

Question 5.

**H.O.T. Write Math** Could Mr. Bloom have planted his carrots in equal rows of 4? If so, how many rows could he have planted? Explain.

Answer:

4 rows of 4

4 x 4 = 16

Explanation:

2 rows of 8 carrots

Mr. Bloom have planted his carrots in equal rows of 4

So, 4 rows of 4

Question 6.

**Multi-Step** List the vegetables in order by the number of plants. Put the names in order from greatest to least.

Answer:

Explanation:

Corns 5 x 9 = 45

Beets 4 x 7 = 28

Beans 4 x 6 = 24

Carrots 2 x 8 =16

Question 17.

**H.O.T.** Mr. Bloom has 12 strawberry plants. Describe all of the different arrays that Mr. Bloom could make using

all of his strawberry plants.

Answer:

1 x 12 =12

12 x 1 = 12

2 x 6 = 12

6 x 2 = 12

4 x 3 = 12

3 x 4 = 12

Explanation:

An array is a way of arranging the the repeated sets so that you can either count along rows or up and down along columns.

**Daily Assessment Task**

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

Question 8.

Jacob made this quilt. It has 5 rows of blocks with 6 blocks in each row. Which multiplication sentence shows the number of blocks in the quilt?

(A) 4 × 5 = 20

(B) 6 × 6 = 36

(C) 5 × 6 = 30

(D) 5 × 5 = 25

Answer:

Option (C)

Explanation:

Jacob quilt has 5 rows of blocks with 6 blocks in each row.

The number of blocks in the quilt

5 x 6 = 30

Question 9.

**Apply** Karen has 6 animal posters. Which describes one array Karen could make using all of her posters?

(A) 2 rows of 4

(B) 2 rows of 3

(C) 1 row of 5

(D) 3 rows of 3

Answer:

Option (B)

Explanation:

Karen has 6 animal posters.

Karen can make array using all of her posters

2 rows of 3

2 x 3 = 6 posters

Question 10.

**Multi-Step** Ashley and Daniel each have a garden with flowers planted in rows. Which multiplication sentence shows the number of flowers in both gardens?

(A) 3 × 7 = 21

(B) 4 × 3 = 12

(C) 4 × 4 = 16

(D) 4 × 7 = 28

Answer:

Option (D)

Explanation:

Ashley ‘s garden has 4 rows of 3 flowers planted =12

Daniel Garden has 4 rows of 4 flowers planted =16

The number of flowers in both gardens

4 x 7 = 28

**Texas Test Prep**

Question 11.

What multiplication sentence does this array show?

(A) 2 × 3 = 6

(B) 4 × 1 = 4

(C) 2 × 5 = 10

(D) 2 × 4 = 8

Answer: (D)

Explanation:

2 rows of 4

### Texas Go Math Grade 3 Lesson 6.4 Homework and Practice Answer Key

**Write a multiplication sentence for the array.**

Question 1.

Answer:

3 rows of 5

3 x 5 = 15

Question 2.

Answer:

4 rows of 7

4 x 7 = 28

**Use the table to solve 3-5.**

Question 3.

Draw an array and write a multiplication sentence to show how many science books are on Anna’s bookshelves.

Answer:

3 x 4 = 12

Explanation:

Anna’s bookshelves has 12 science books,

arranged in 3 rows of 4.

Question 4.

Write a number sentence to show how many reading books are on Anna’s bookshelves.

Answer:

20 reading books.

Explanation:

Anna’s bookshelves has 4 rows of 5 reading books.

4 x 5 = 20

Question 5.

Describe three different arrays that Anna can make to show how many art books she has.

Answer:

2). 2 x 8 =16

3). 2 rows of eight.

Explanation:

By drawing array.

By representing in multiplication sentence.

By mentioning the arrangement of rows.

**Problem Solving**

Question 6.

Sasha makes an array of tiles. She has 3 rows of 9 tiles. Write a multiplication sentence to show Sasha’s array.

Answer: 27

3 x 9 = 27

Explanation:

Sasha makes array with 3 rows of 9 tiles.

3 x 9 = 27

Question 7.

Dexter makes an array of tiles. He has 5 rows of 6 tiles. Write a multiplication sentence to show Dexter’s array.

Answer: 30

Explanation:

Dexter makes array 5 rows of 6 tiles.

5 x 6 = 30

**Texas Test Prep**

**Lesson Check**

Question 8.

Ryan makes this array. Which equation does Ryan’s array show?

(A) 3 × 7 = 21

(B) 3 + 7 = 10

(C) 3 × 6 = 18

(D) 3 × 7 = 20

Answer:

Option (A)

Explanation:

Each array has 7 tiles,

arranged in 3 rows.

Question 9.

Ahmad makes this array. Which equation does Ahmad’s array show?

(A) 2 + 6 = 8

(B) 6 + 2 = 8

(C) 2 × 6 = 12

(D) 2 × 6 = 26

Answer:

Option (C)

Explanation:

Total 12 tiles arranged in 2 rows.

Each array has 6 tiles.

Question 10.

Becky has 24 stamps. Which describes one array Becky can make using all of the stamps?

(A) 3 rows of 6

(B) 2 rows of 9

(C) 4 rows of 6

(D) 5 rows of 3

Answer:

Option(C)

Explanation:

Becky has 24 stamps.

Using all the stamps Becky makes 4 rows

Question 11.

Keesha makes an array of 5 rows of 7 stickers. How many stickers does Keesha have?

(A) 28

(B) 12

(C) 57

(D) 35

Answer:

Option (D)

Explanation:

Keesha makes an array of 5 rows of 7 stickers.

Total stickers does Keesha have

5 x 7 = 35

Question 12.

**Multi-Step** DeShawn makes an array using 3 rows of 5 tiles. How many tiles does Deshawn have if he adds 2 more rows to the array?

(A) 15

(B) 9

(C) 20

(D) 25

Answer:

Option (D)

Explanation:

DeShawn makes an array using 3 rows of 5 tiles.

Deshawn adds 2 more rows to the array.

Total tiles al together = (3 + 2) x 5 = 25

Question 13.

**Multi-Step** Ming makes an array using 2 rows of 7 tiles. She adds 3 more rows to the array. Which multiplication sentence does Ming’s array show?

(A) 2 × 7 = 14

(B) 3 × 7 = 21

(C) 5 × 7 = 35

(D) 9 × 3 = 27

Answer:

Option (C)

Explanation:

Ming makes an array using 2 rows of 7 tiles.

She adds 3 more rows to the array.

multiplication sentence 5 x 7 = 35 show Ming’s array.