## Engage NY Eureka Math 4th Grade Module 3 Lesson 6 Answer Key

### Eureka Math Grade 4 Module 3 Lesson 6 Problem Set Answer Key

Represent the following problem by drawing disks in the place value chart.

Question 1.

To solve 20 × 40, think

(2 tens × 4) × 10 = __800___

20 × (4 × 10) = ___800_____

20 × 40 = _____800__

Answer:

20 X 40 = 800,

(2 tens × 4) × 10 = 8 hundreds,

20 × (4 × 10) = 800,

20 × 40 = 800,

Explanation:

Drawn place value disks to represent the value of the

following expression as shown above as 20 X 40 = 800,

(2 tens × 4) × 10 =8 hundreds, 20 × (4 × 10) = 800 and

20 × 40 = 800.

Question 2.

Draw an area model to represent 20 × 40.

2 tens × 4 tens = _____ __8 hundreds__________

Answer:

Explanation:

Drawn an area model to represent 20 × 40,

as shown above 2 tens X 4 tens = 8 hundreds.

Question 3.

Draw an area model to represent 30 × 40.

3 tens × 4 tens = _____ twelve hundreds_____________

30 × 40 = __12,00____

Answer:

Explanation:

Drawn an area model to represent 30 × 40,

as shown above 3 tens X 4 tens = 12 hundreds.

Question 4.

Draw an area model to represent 20 × 50.

2 tens × 5 tens = _____ ___1 thousand__________

20 × 50 = __1,000_____

Answer:

Explanation:

Drawn an area model to represent 20 × 50,

as shown above 2 tens X 5 tens = 1 thousand.

Rewrite each equation in unit form and solve.

Question 5.

20 × 20 = __400______

2 tens × 2 tens = ___4__ hundreds

Answer:

20 X 20 = 400,

2 tens × 2 tens = 4 hundreds,

Explanation:

Given equation is 20 X 20, Rewrote in unit form as

2 tens X 2 tens = 4 hundreds, So 20 X 20 = 40.

Question 6.

60 × 20 = ___1,200____

6 tens × 2 __tens___ = __12__ hundreds

Answer:

60 X 20 = 1,200,

6 tens × 2 tens = 12 hundreds,

Explanation:

Given equation is 60 X 20 = 1,200, Rewrote in unit form as

6 tens X 2 tens = 12 hundreds, So 60 X 20 = 1,200.

Question 7.

70 × 20 = __1,400_____

__7___ tens × __2___ tens = 1,400__

Answer:

70 X 20 = 1,400,

7 tens X 2 tens = 1,400,

Explanation:

Given equation is 70 X 20 = 1,400, Rewrote in unit form as

7 tens X 2 tens = 14 hundreds, So 70 X 20 = 1,400.

Question 8.

70 × 30 = ___2,100____

__7__ __tens_____ × __3__ _tens______ = __21__ hundreds

Answer:

70 X 30 = 2,100,

7 tens X 3 tens = 21 hundreds,

Explanation:

Given equation is 70 X 30 = 2,100, Rewrote in unit form as

7 tens X 3 tens = 21 hundreds, So 70 X 30 = 2,100.

Question 9.

If there are 40 seats per row, how many seats are in 90 rows?

Answer:

There are 3,600 seats in 90 rows,

Explanation:

Given there are 40 seats per row, So number of seats in 90 rows are

40 seats X 90 = 3,600 seats, therefore there are 3,600 seats in 90 rows.

Question 10.

One ticket to the symphony costs $50. How much

money is collected if 80 tickets are sold?

Answer:

$4,000 amount money is collected if 80 tickets are sold,

Explanation:

Given one ticket to the symphony costs $50. So

money collected if 80 tickets are sold are $50 X 80 = $4,000.

Therefore, $4,000 amount money is collected if 80 tickets are sold.

### Eureka Math Grade 4 Module 3 Lesson 6 Exit Ticket Answer Key

Represent the following problem by drawing disks in the place value chart.

Question 1.

To solve 20 × 30, think

(2 tens × 3) × 10 = ____600____

20 × (3 × 10) = ____600____

20 × 30 = ___600____

Answer:

20 X 30 = 600,

(2 tens × 3) × 10 =6 hundreds,

20 × (3 × 10) = 600,

20 × 30 = 600,

Explanation:

Drawn place value disks to represent the value of the

following expression as shown above as 20 X 30 = 600,

(2 tens × 3) × 10 =3 hundreds, 20 × (3 × 10) = 600 and

20 × 30 = 600.

Question 2.

Draw an area model to represent 20 × 30.

2 tens × 3 tens = _____ _6 hundreds___________

Answer:

Explanation:

Drawn an area model to represent 20 × 30,

as shown above 2 tens X 3 tens = 6 hundreds.

Question 3.

Every night, Eloise reads 40 pages. How many total pages

does she read at night during the 30 days of November?

Answer:

1,200 pages she read at night during the 30 days

of November,

Explanation:

Given every night, Eloise reads 40 pages, Total number of

pages she read at night during the 30 days of November are

40 pages X 30 = 1,200 pages, So Eloise 1,200 pages she read at

night during the 30 days of November.

### Eureka Math Grade 4 Module 3 Lesson 6 Homework Answer Key

Represent the following problem by drawing disks in the place value chart.

Question 1.

To solve 30 × 60, think

(3 tens × 6) × 10 = ___1,800_____

30 × (6 × 10) = __1,800______

30 × 60 = __1,800_____

Answer:

30 X 60 = 1,800,

(3 tens × 6) × 10 =18 hundreds,

30 × (6 × 10) = 1,800,

30 × 60 = 1,800,

Explanation:

Drawn place value disks to represent the value of the

following expression as shown above as 30 X 60 = 1,800,

(3 tens × 6) × 10 =18 hundreds, 30 × (6 × 10) = 1,800 and

30 × 60 = 1,800.

Question 2.

Draw an area model to represent 30 × 60.

3 tens × 6 tens = _____18 hundreds_____________

Answer:

Explanation:

Drawn an area model to represent 30 × 60,

as shown above 3 tens X 6 tens = 18 hundreds.

Question 3.

Draw an area model to represent 20 × 20.

2 tens × 2 tens = _____ 4 hundreds_____________

20 × 20 = __400____

Answer:

Explanation:

Drawn an area model to represent 20 × 20,

as shown above 2 tens X 2 tens = 4 hundreds.

Question 4.

Draw an area model to represent 40 × 60.

4 tens × 6 tens = __24___ _hundreds____________

40 × 60 = ___240____

Answer:

Explanation:

Drawn an area model to represent 40 × 60,

as shown above 4 tens X 6 tens = 24 hundreds.

Rewrite each equation in unit form and solve.

Question 5.

50 × 20 = ___1,000_____

5 tens × 2 tens = _10____ hundreds

Answer:

50 X 20 = 1,000,

5 tens X 2 tens = 10 hundreds,

Explanation:

Given equation is 50 X 20 = 1,000, Rewrote in unit form as

5 tens X 2 tens = 10 hundreds, So 50 X 20 = 1,000.

Question 6.

30 × 50 = _1,500____

3 tens × 5 _tens___ = _15___ hundreds

Answer:

30 X 50 = 1,500,

3 tes X 5 tens = 15 hundreds,

Explanation:

Given equation is 30 X 50 = 1,500, Rewrote in unit form as

3 tens X 5 tens = 15 hundreds, So 30 X 50 = 1,500.

Question 7.

60 × 20 = __1,200______

__6___ tens × __2___ tens = 12 __hundreds_______

Answer:

60 X 20 = 1,200,

6 tens X 2 tens = 12 hundreds,

Explanation:

Given equation is 60 X 20 = 1,200, Rewrote in unit form as

6 tens X 2 tens = 12 hundreds, So 60 X 20 = 1,200.

Question 8.

40 × 70 = __2,800______

_4___ ___tens____ × _7___ __tens_____ = __28___ hundreds

Answer:

40 X 70 = 2,800,

4 tens X 7 tens = 28 hundreds,

Explanation:

Given equation is 40 X 70 = 2,800, Rewrote in unit form as

4 tens X 7 tens = 28 hundreds, So 40 X 70 = 2,800.

Question 9.

There are 60 seconds in a minute and 60 minutes in an hour.

How many seconds are in one hour?

Answer:

There are 3,600 seconds in one hour,

Explanation:

There are 60 seconds in a minute and 60 minutes in an hour.

Number of seconds are there in one hour is 60 seconds X 60 =

3,600 seconds,therefore, there are 3,600 seconds in one hour.

Question 10.

To print a comic book, 50 pieces of paper are needed.

How many pieces of paper are needed to print 40 comic books?

Answer:

Number of pieces of paper needed to print 40 comic books are

2,000 pieces,

Explanation:

Given to print a comic book, 50 pieces of paper are needed.

So number of pieces of paper are needed to print 40 comic books

are 50 pieces X 40 = 2,000 pieces.