## Engage NY Eureka Math 2nd Grade Module 8 Lesson 3 Answer Key

### Eureka Math Grade 2 Module 8 Lesson 3 Core Fluency Practice Set A Answer Key

Question 1.

10 + 9 =

Answer: 19

Explanation:

Addition fluency is a method to remember the addition facts. So we can produce the answers quickly and accurately.

By adding 10 with 9 we get 19

Question 2.

10 + 1 =

Answer: 11

By adding 10 with 1 we get 11

Question 3.

11 + 2 =

Answer: 13

By adding 10 with 3 we get 13

Question 4.

13 + 6 =

Answer: 19

By adding 13 with 6 we get 19

Question 5.

15 + 5 =

Answer: 20

By adding 15 with 5 we get 20

Question 6.

14 + 3 =

Answer: 17

By adding 14 with 3 we get 17

Question 7.

13 + 5 =

Answer: 18

By adding 13 with 5 we get 18

Question 8.

12 + 4 =

Answer: 16

By adding 12 with 4 we get 16

Question 9.

16 + 2 =

Answer: 18

By adding 16 with 2 we get 18

Question 10.

18 + 1 =

Answer: 19

By adding 18 with 1 we get 19

Question 11.

11 + 7 =

Answer: 18

By adding 11 with 7 we get 18

Question 12.

13 + 4 =

Answer: 17

By adding 13 with 4 we get 17

Question 13.

14 + 5 =

Answer: 19

By adding 14 with 5 we get 19

Question 14.

9 + 4 =

Answer: 13

By adding 9 with 4 we get 13

Question 15.

9 + 2 =

Answer: 11

By adding 9 with 2 we get 11

Question 16.

9 + 9 =

Answer: 18

By adding 9 with 9 we get 18

Question 17.

6 + 9 =

Answer: 15

By adding 6 with 9 we get 15

Question 18.

8 + 9 =

Answer: 17

By adding 8 with 9 we get 17

Question 19.

7 + 8 =

Answer: 15

By adding 7 with 8 we get 15

Question 20.

8 + 8 =

Answer: 16

By adding 8 with 8 we get 16

Question 21.

3 + 9 =

Answer: 12

By adding 3 with 9 we get 12

Question 22.

4 + 8 =

Answer: 12

By adding 4 with 8 we get 12

Question 23.

5 + 9 =

Answer: 14

By adding 5 with 9 we get 14

Question 24.

8 + 8 =

Answer: 16

By adding 8 with 8 we get 16

Question 25.

7 + 5 =

Answer: 12

By adding 7 with 5 we get 12

Question 26.

5 + 8 =

Answer: 13

By adding 5 with 8 we get 13

Question 27.

8 + 3 =

Answer: 11

By adding 8 with 3 we get 11

Question 28.

6 + 8 =

Answer: 14

By adding 6 with 8 we get 14

Question 29.

4 + 6 =

Answer: 10

By adding 4 with 6 we get 10

Question 30.

7 + 6 =

Answer: 13

By adding 7 with 6 we get 13

Question 31.

7 + 4 =

Answer: 11

By adding 7 with 4 we get 11

Question 32.

7 + 9 =

Answer: 16

By adding 7 with 9 we get 16

Question 33.

7 + 7 =

Answer: 14

By adding 7 with 7 we get 14

Question 34.

8 + 6 =

Answer: 14

By adding 8 with 6 we get 14

Question 35.

6 + 9 =

Answer: 15

By adding 6 with 9 we get 15

Question 36.

8 + 5 =

Answer: 13

By adding 8 with 5 we get 13

Question 37.

4 + 7 =

Answer: 11

By adding 4 with 7 we get 11

Question 38.

3 + 9 =

Answer: 12

By adding 3 with 9 we get 12

Question 39.

8 + 6 =

Answer: 14

By adding 8 with 6 we get 14

Question 40.

9 + 4 =

Answer: 13

By adding 9 with 4 we get 13

### Eureka Math Grade 2 Module 8 Lesson 3 Core Fluency Practice Set B Answer Key

Question 1.

10 + 8 =

Answer:

By adding 10 with 9 we get 19

Question 2.

4 + 10 =

Answer:

By adding 10 with 9 we get 19

Question 3.

9 + 10 =

Answer:

By adding 10 with 9 we get 19

Question 4.

11 + 5 =

Answer:

By adding 10 with 9 we get 19

Question 5.

13 + 3 =

Answer:

By adding 10 with 9 we get 19

Question 6.

12 + 4 =

Answer:

By adding 10 with 9 we get 19

Question 7.

16 + 3 =

Answer:

By adding 10 with 9 we get 19

Question 8.

15 + = 19

Answer:

By adding 10 with 9 we get 19

Question 9.

18 + = 20

Answer:

By adding 10 with 9 we get 19

Question 10.

13 + 5 =

Answer:

By adding 10 with 9 we get 19

Question 11.

____ = 4 + 16

Answer:

By adding 10 with 9 we get 19

Question 12.

____ = 6 + 12

Answer:

By adding 10 with 9 we get 19

Question 13.

____ = 14 + 6

Answer:

By adding 10 with 9 we get 19

Question 14.

9 + 3 =

Answer:

By adding 10 with 9 we get 19

Question 15.

7 + 9 =

Answer:

By adding 10 with 9 we get 19

Question 16.

____ + 4 = 11

Answer:

By adding 10 with 9 we get 19

Question 17.

____ + 6 = 13

Answer:

By adding 10 with 9 we get 19

Question 18.

____ + 5 = 12

Answer:

By adding 10 with 9 we get 19

Question 19.

____ + 8 = 14

Answer:

By adding 10 with 9 we get 19

Question 20.

____ + 9 = 15

Answer:

By adding 10 with 9 we get 19

Question 21.

5 + 8 =

Answer:

By adding 10 with 9 we get 19

Question 22.

6 + 7 =

Answer:

By adding 10 with 9 we get 19

Question 23.

____ + 4 = 12

Answer:

By adding 10 with 9 we get 19

Question 24.

____ + 7 = 13

Answer:

By adding 10 with 9 we get 19

25.

6 + ____ = 14

Answer:

By adding 10 with 9 we get 19

Question 26.

7 + _____ = 15

Answer:

By adding 10 with 9 we get 19

Question 27.

____ = 9 + 8

Answer:

By adding 10 with 9 we get 19

Question 28.

____ = 7 + 5

Answer:

By adding 10 with 9 we get 19

Question 29.

____ = 4 + 8

Answer:

By adding 10 with 9 we get 19

Question 30.

3 + 9 =

Answer:

By adding 10 with 9 we get 19

Question 31.

6 + 7 =

Answer:

By adding 10 with 9 we get 19

Question 32.

8 + _____ = 13

Answer:

By adding 10 with 9 we get 19

Question 33.

____ = 7 + 9

Answer:

By adding 10 with 9 we get 19

Question 34.

6 + 6 =

Answer:

By adding 10 with 9 we get 19

Question 35.

____ = 7 + 5

Answer:

By adding 10 with 9 we get 19

Question 36.

____ = 4 + 8

Answer:

By adding 10 with 9 we get 19

Question 37.

20 = 13 + ____

Answer:

By adding 10 with 9 we get 19

Question 38.

18 = _____ + 9

Answer:

By adding 10 with 9 we get 19

Question 39.

16 = ____ + 7

Answer:

By adding 10 with 9 we get 19

Question 40.

20 = 9 + ____

Answer:

By adding 10 with 9 we get 19

### Eureka Math Grade 2 Module 8 Lesson 3 Core Fluency Practice Set C Answer Key

Question 1.

19 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 2.

19 – 11 =

Answer:

By subtracting 19 with 9 we get 10

Question 3.

17 – 10 =

Answer:

By subtracting 19 with 9 we get 10

Question 4.

12 – 2 =

Answer:

By subtracting 19 with 9 we get 10

Question 5.

15 – 12 =

Answer:

By subtracting 19 with 9 we get 10

Question 6.

18 – 10 =

Answer:

By subtracting 19 with 9 we get 10

Question 7.

17 – 5 =

Answer:

By subtracting 19 with 9 we get 10

Question 8.

20 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 9.

14 – 4 =

Answer:

By subtracting 19 with 9 we get 10

Question 10.

16 – 13 =

Answer:

By subtracting 19 with 9 we get 10

Question 11.

11 – 2 =

Answer:

By subtracting 19 with 9 we get 10

Question 12.

12 – 3 =

Answer:

By subtracting 19 with 9 we get 10

Question 13.

14 – 2 =

Answer:

By subtracting 19 with 9 we get 10

Question 14.

13 – 4 =

Answer:

By subtracting 19 with 9 we get 10

Question 15.

11 – 3 =

Answer:

By subtracting 19 with 9 we get 10

Question 16.

12 – 4 =

Answer:

By subtracting 19 with 9 we get 10

Question 17.

13 – 2 =

Answer:

By subtracting 19 with 9 we get 10

Question 18.

14 – 5 =

Answer:

By subtracting 19 with 9 we get 10

Question 19.

11 – 4 =

Answer:

By subtracting 19 with 9 we get 10

Question 20.

12 – 5 =

Answer:

By subtracting 19 with 9 we get 10

Question 21.

15 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 22.

18 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 23.

16 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 24.

15 – 6 =

Answer:

By subtracting 19 with 9 we get 10

Question 25.

17 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 26.

14 – 6 =

Answer:

By subtracting 19 with 9 we get 10

Question 27.

16 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 28.

13 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 29.

12 – 5 =

Answer:

By subtracting 19 with 9 we get 10

Question 30.

19 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 31.

17 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 32.

16 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 33.

14 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 34.

15 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 35.

13 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 36.

12 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 37.

15 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 38.

14 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 39.

12 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 40.

11 – 9 =

Answer:

By subtracting 19 with 9 we get 10

### Eureka Math Grade 2 Module 8 Lesson 3 Core Fluency Practice Set D Answer Key

Question 1.

12 – 3 =

Answer:

By subtracting 19 with 9 we get 10

Question 2.

13 – 5 =

Answer:

By subtracting 19 with 9 we get 10

Question 3.

11 – 2 =

Answer:

By subtracting 19 with 9 we get 10

Question 4.

12 – 5 =

Answer:

By subtracting 19 with 9 we get 10

Question 5.

13 – 4 =

Answer:

By subtracting 19 with 9 we get 10

Question 6.

13 – 2 =

Answer:

By subtracting 19 with 9 we get 10

Question 7.

11 – 4 =

Answer:

By subtracting 19 with 9 we get 10

Question 8.

12 – 6 =

Answer:

By subtracting 19 with 9 we get 10

Question 9.

11 – 3 =

Answer:

By subtracting 19 with 9 we get 10

Question 10.

13 – 6 =

Answer:

By subtracting 19 with 9 we get 10

Question 11.

____ = 11 – 9

Answer:

By subtracting 19 with 9 we get 10

Question 12.

____ = 13 – 8

Answer:

By subtracting 19 with 9 we get 10

Question 13.

____ = 12 – 7

Answer:

By subtracting 19 with 9 we get 10

Question 14.

____ = 11 – 6

Answer:

By subtracting 19 with 9 we get 10

Question 15.

____ = 13 – 9

Answer:

By subtracting 19 with 9 we get 10

Question 16.

____ = 14 – 8

Answer:

By subtracting 19 with 9 we get 10

Question 17.

____ = 11 – 7

Answer:

By subtracting 19 with 9 we get 10

Question 18.

____ = 15 – 6

Answer:

By subtracting 19 with 9 we get 10

Question 19.

____ = 16 – 9

Answer:

By subtracting 19 with 9 we get 10

Question 20.

____ = 12 – 8

Answer:

By subtracting 19 with 9 we get 10

Question 21.

13 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 22.

15 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 23.

18 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 24.

14 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 25.

17 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 26.

12 – 9 =

Answer:

By subtracting 19 with 9 we get 10

Question 27.

13 – 6 =

Answer:

By subtracting 19 with 9 we get 10

Question 28.

15 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 29.

16 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 30.

12 – 6 =

Answer:

By subtracting 19 with 9 we get 10

Question 31.

____ = 13 – 9

Answer:

By subtracting 19 with 9 we get 10

Question 32.

____ = 17 – 8

Answer:

By subtracting 19 with 9 we get 10

Question 33.

____ = 14 – 9

Answer:

By subtracting 19 with 9 we get 10

Question 34.

____ = 13 – 5

Answer:

By subtracting 19 with 9 we get 10

Question 35.

____ = 15 – 8

Answer:

By subtracting 19 with 9 we get 10

Question 36.

____ = 18 – 9

Answer:

By subtracting 19 with 9 we get 10

Question 37.

____ = 16 – 7

Answer:

By subtracting 19 with 9 we get 10

Question 38.

____ = 20 – 12

Answer:

By subtracting 19 with 9 we get 10

Question 39.

____ = 20 – 6

Answer:

By subtracting 19 with 9 we get 10

Question 40.

____ = 20 – 17

Answer:

By subtracting 19 with 9 we get 10

### Eureka Math Grade 2 Module 8 Lesson 3 Core Fluency Practice Set E Answer Key

Question 1.

13 – 4 =

Answer:

By subtracting 19 with 9 we get 10

Question 2.

15 – 8 =

Answer:

By subtracting 19 with 9 we get 10

Question 3.

19 – 5 =

Answer:

By subtracting 19 with 9 we get 10

Question 4.

11 – 7 =

Answer:

By subtracting 19 with 9 we get 10

Question 5.

9 + 6 =

Answer:

By adding 19 with 9 we get 10

Question 6.

7 + 8 =

Answer:

By adding 19 with 9 we get 10

Question 7.

4 + 7 =

Answer:

By adding 19 with 9 we get 10

Question 8.

13 + 6 =

Answer:

By adding 19 with 9 we get 10

Question 9.

12 – 8 =

Answer:

By subtracting 12 with 8 we get 4

Question 10.

17 – 9 =

Answer:

By subtracting 12 with 8 we get 4

Question 11.

14 – 6 =

Answer:

By subtracting 12 with 8 we get 4

Question 12.

16 – 7 =

Answer:

By subtracting 12 with 8 we get 4

Question 13.

6 + 8 =

Answer:

By adding 19 with 9 we get 10

Question 14.

7 + 6 =

Answer:

By adding 19 with 9 we get 10

Question 15.

4 + 9 =

Answer:

By adding 19 with 9 we get 10

Question 16.

5 + 7 =

Answer:

By adding 19 with 9 we get 10

Question 17.

9 – 5 =

Answer:

By subtracting 12 with 8 we get 4

Question 18.

13 – 7 =

Answer:

By subtracting 12 with 8 we get 4

Question 19.

16 – 9 =

Answer:

By subtracting 12 with 8 we get 4

Question 20.

14 – 8 =

Answer:

By subtracting 12 with 8 we get 4

Question 21.

8 + 4 =

Answer:

By adding 19 with 9 we get 10

Question 22.

6 + 7 =

Answer:

By adding 19 with 9 we get 10

Question 23.

9 + 9 =

Answer:

By adding 19 with 9 we get 10

Question 24.

12 – 6 =

Answer:

By subtracting 12 with 8 we get 4

Question 25.

16 – 7 =

Answer:

By subtracting 12 with 8 we get 4

Question 26.

13 – 5 =

Answer:

By subtracting 12 with 8 we get 4

Question 27.

11 – 8 =

Answer:

By subtracting 12 with 8 we get 4

Question 28.

7 + 9 =

Answer:

By adding 19 with 9 we get 10

Question 29.

5 + 7 =

Answer:

By adding 19 with 9 we get 10

Question 30.

8 + 7 =

Answer:

By adding 19 with 9 we get 10

Question 31.

9 + 8 =

Answer:

By adding 19 with 9 we get 10

Question 32.

11 + 9 =

Answer:

By adding 19 with 9 we get 10

Question 33.

12 – 3 =

Answer:

By subtracting 12 with 8 we get 4

Question 34.

14 – 5 =

Answer:

By subtracting 12 with 8 we get 4

Question 35.

20 – 13 =

Answer:

By subtracting 12 with 8 we get 4

Question 36.

8 – 5 =

Answer:

By subtracting 12 with 8 we get 4

Question 37.

7 + 4 =

Answer:

By adding 19 with 9 we get 10

Question 38.

13 + 5 =

Answer:

By adding 19 with 9 we get 10

Question 39.

7 + 9 =

Answer:

By adding 19 with 9 we get 10

Question 40.

8 + 11 =

Answer:

By adding 19 with 9 we get 10

### Eureka Math Grade 2 Module 8 Lesson 3 Problem Set Answer Key

Question 1.

Use a straightedge to draw the polygon with the given attributes in the space to the right.

a.

Draw a polygon with 3 angles.

Number of sides: ______

Name of polygon: ______

Answer:

b.

Draw a five-sided polygon.

Number of angles: ______

Name of polygon: ______

Answer:

c.

Draw a polygon with 4 angles.

Number of sides: ______

Name of polygon: ______

Answer:

d.

Draw a six-sided polygon.

Number of angles: ______

Name of polygon: ______

Answer:

e.

Compare your polygons to those of your partner. Copy one example that is very different from your own in the space to the right.

Answer:

Question 2.

Use your straightedge to draw 2 new examples of each polygon that are different from those you drew on the first page.

a. Triangle

Answer:

b. Pentagon

Answer:

c. Quadrilateral

Answer:

d. Hexagon

Answer:

### Eureka Math Grade 2 Module 8 Lesson 3 Homework Answer Key

Use a straightedge to draw the polygon with the given attributes in the space to the right.

Question:

Draw a five-sided polygon.

Number of angles: ______

Name of polygon: _______

Answer:

Question 1.

Use a straightedge to draw the polygon with the given attributes in the space to the right.

a.

Draw a polygon with 4 angles.

Number of sides: ______

Name of polygon: ______

Answer:

b.

Draw a six-sided polygon.

Number of angles: ______

Name of polygon: ______

Answer:

c.

Draw a polygon with 3 angles.

Number of sides: ______

Name of polygon: ______

Answer:

d.

Draw a five-sided polygon.

Number of angles: ______

Name of polygon: ______

Answer:

Question 2.

Use your straightedge to draw 2 new examples of each polygon that are different from those you drew on the first page.

a. Quadrilateral

Answer:

b. Hexagon

Answer:

c. Pentagon

Answer:

d. Triangle

Answer: