Eureka Grade 3 ensures students with the learning targets and success criteria. The Diverse opportunities will develop problem-solving skills among the primary school kids practicing Bigideas Math Grade 3 Solutions. Eureka Textbook Grade 3 answers help Students Master the subject on Consistent practice.

## Engage NY Eureka Math 3rd Grade Module 3 Lesson 20 Answer Key

Grade 3 Eureka Math Answer Key is provided by subject experts as per the Common Core curriculum. Grade 3 Eureka Math Solutions provided educates the primary school Kids on all Math concepts of the chapter efficiently. Eureka Math Grade 3 Textbook Answers makes it easy for kids to Grasp the Concepts as well as solve any problem from chapter Tests, Practice Tests, Performance tests, cumulative practice, etc.

### Eureka Math Grade 3 Module 3 Lesson 20 Problem Set Answer Key

Question 1.

Use the chart to complete the equations. Then, solve. The first one has been done for you.

a.

(2 × 4) × 10

= (8 ones) × 10

= ___80____

Answer:

8 x 10 = 80.

Explanation:

In the above-given question,

given that,

(2 x 4) x 10.

(8 ones) x 10.

80.

b.

2 × (4 × 10)

= 2 × (4 tens)

= ___80____

Answer:

2 x 4 tens = 80.

Explanation:

In the above-given question,

given that,

2 x (4 x 10).

2 x (4 tens).

80.

c.

(3 × 5) × 10

= ( __15___ ones ) × 10

= ___150____

Answer:

15 x 10 = 150.

Explanation:

In the above-given question,

given that,

(3 x 5) x 10.

(15 ones) x 10.

150.

d.

3 × (5 × 10)

= 3 × ( ___50___ tens)

= ___150____

Answer:

3 x 5 tens = 150.

Explanation:

In the above-given question,

given that,

3 x (5 x 10).

3 x (5 tens).

150.

Question 2.

Place parentheses in the equations to find the related fact. Then, solve. The first one has been done for you.

Answer:

2 x 20 = 40.

2 x 30 = 60.

3 x 30 = 90.

2 x 50 = 100.

Explanation:

In the above-given figure,

given that,

2 x 20 = 2 x (2 x 10).

(2 x 2) x 10.

4 x 10 = 40.

2 x 30 = 2 x (3 x 10).

(2 x 3) x 10.

6 x 10 = 60.

3 x 30 = 3 x (3 x 10).

(3 x 3) x 10.

9 x 10 = 90.

2 x 50 = 2 x (5 x 10).

(2 x 5) x 10.

10 x 10 = 100.

Question 3.

Gabriella solves 20 × 4 by thinking about 10 × 8. Explain her strategy.

Answer:

20 x 4 = 80.

Explanation:

In the above-given question,

given that,

Gabriella solves 20 x 4 = 80.

This can also write it as 10 x 8 = 80.

20 x 4 = (2 x 10) x 4.

2 x (10 x 4).

2 x 40 = 80.

### Eureka Math Grade 3 Module 3 Lesson 20 Exit Ticket Answer Key

Question 1.

Place parentheses in the equations to find the related fact. Then, solve.

a. 4 × 20 = 4 × 2 × 10

= 4 × 2 × 10

= __8____ × 10

= __80____

Answer:

4 x 20 = 80.

Explanation:

In the above-given question,

given that,

4 x 20 = 4 x (2 x 10).

(4 x 2) x 10.

8 x 10.

80

b. 3 × 30 = 3 × 3 × 10

= 3 × 3 × 10

= __9___ × 10

Answer:

3 x 30 = 90.

Explanation:

In the above-given question,

given that,

3 x 30 = 3 x (3 x 10).

(3 x 3) x 10.

9 x 10.

90

Question 2.

Jamila solves 20 × 5 by thinking about 10 tens. Explain her strategy.

Answer:

20 x 5 = 100.

Explanation:

In the above-given question,

given that,

Jamila solves 20 x 5 by thinking about 10 tens.

20 x 5 = (2 x 10) x 5.

2 x (10 x 5).

2 x 50 = 100.

10 x 10 = 100.

### Eureka Math Grade 3 Module 3 Lesson 20 Homework Answer Key

Question 1.

Use the chart to complete the equations. Then, solve.

a.

(2 × 5) × 10

= (10 ones) × 10

= ___100____

Answer:

8 x 10 = 80.

Explanation:

In the above-given question,

given that,

(2 x 5) x 10.

(10 ones) x 10.

100.

b.

2 × (5 × 10)

= 2 × (5 tens)

= ___100____

Answer:

2 x 5 tens = 100.

Explanation:

In the above-given question,

given that,

2 x (5 x 10).

2 x (5 tens).

100.

c.

(4 × 5) × 10

= (__20___ ones) × 10

= ___200____

Answer:

20 x 10 = 200.

Explanation:

In the above-given question,

given that,

(4 x 5) x 10.

(20 ones) x 10.

200.

d.

4 × (5 × 10)

= 4 × (__5__ tens)

= ___200____

Answer:

4 x 5 tens = 200.

Explanation:

In the above-given question,

given that,

4 x (5 x 10).

4 x (5 tens).

200.

Question 2.

Solve, Place parentheses in (c) and (d) as needed to find the related fact.

Answer:

3 x 20 = 60.

3 x 30 = 90.

3 x 40 = 120.

3 x 50 = 150.

Explanation:

In the above-given figure,

given that,

3 x 20 = 3 x (2 x 10).

(3 x 2) x 10.

6 x 10 = 60.

3 x 30 = 3 x (3 x 10).

(3 x 3) x 10.

9 x 10 = 90.

3 x 40 = 3 x (4 x 10).

(3 x 4) x 10.

12 x 10 = 120.

3 x 50 = 3 x (5 x 10).

(3 x 5) x 10.

15 x 10 = 150.

Question 3.

Danny solves 5 × 20 by thinking about 10 × 10. Explain his strategy.

Answer:

5 x 20 = 100.

Explanation:

In the above-given question,

given that,

Danny solves 5 x 20 = 100.

5 x 20 = 5 x ( 2 x 10).

(5 x 2) x 10.

10 x 10 = 100.