## Engage NY Eureka Math 1st Grade Module 1 Lesson 28 Answer Key

### Eureka Math Grade 1 Module 1 Lesson 28 Sprint Answer Key

A

*Write the number that is 1 less.

Question 1.

5

Answer: 4

Explination:

Subtract 1 from 5

5-1=4

Question 2.

4

Answer: 3

Explination:

Subtract 1 from 4

4-1=3

Question 3.

3

Answer: 2

Explination:

Subtract 1 from 3

3-1=2

Question 4.

5

Answer: 4

Explination:

Subtract 1 from 5

5-1=4

Question 5.

3

Answer: 2

Explination:

Subtract 1 from 3

3-1=2

Question 6.

1

Answer: 0

Explination:

Subtract 1 from 1

1-1=0

Question 7.

4

Answer: 3

Explination:

Subtract 1 from 4

4-1=3

Question 8.

5

Answer: 4

Explination:

Subtract 1 from 5

5-1=4

Question 9.

7

Answer: 6

Explination:

Subtract 1 from 7

7-1=6

Question 10.

6

Answer: 5

Explination:

Subtract 1 from 6

6-1=5

Question 11.

7

Answer: 6

Explination:

Subtract 1 from 7

7-1=6

Question 12.

9

Answer: 8

Explination:

Subtract 1 from 9

9-1=8

Question 13.

8

Answer: 7

Explination:

Subtract 1 from 8

8-1=7

Question 14.

9

Answer: 8

Explination:

Subtract 1 from 9

9-1=8

Question 15.

10

Answer: 9

Explination:

Subtract 1 from 10

10-1=9

Question 16.

10

Answer: 9

Explination:

Subtract 1 from 10

10-1=9

Question 17.

8

Answer: 7

Explination:

Subtract 1 from 8

8-1=7

Question 18.

11

Answer: 10

Explination:

Subtract 1 from 11

11-1=10

Question 19.

10

Answer: 9

Explination:

Subtract 1 from 10

10-1=9

Question 20.

9

Answer: 8

Explination:

Subtract 1 from 9

9-1=8

Question 21.

1

Answer: 0

Explination:

Subtract 1 from 1

1-1=0

Question 22.

11

Answer: 10

Explination:

Subtract 1 from 11

11-1=10

Question 23.

21

Answer: 20

Explination:

Subtract 1 from 21

21-1=20

Question 24.

4

Answer: 3

Explination:

Subtract 1 from 4

4-1=3

Question 25.

14

Answer: 13

Explination:

Subtract 1 from 14

14-1=13

Question 26.

24

Answer: 23

Explination:

Subtract 1 from 24

24-1=23

Question 27.

10

Answer: 9

Explination:

Subtract 1 from 10

10-1=9

Question 28.

20

Answer: 19

Explination:

Subtract 1 from 20

20-1=19

Question 29.

21

Answer: 20

Explination:

Subtract 1 from 21

21-1=20

Question 30.

31

Answer: 30

Explination:

Subtract 1 from 31

31-1=30

B

*Write the number that is 1 less.

Question 1.

3

Answer: 2

Explination:

Subtract 1 from 3

3-1=2

Question 2.

2

Answer: 1

Explination:

Subtract 1 from 2

2-1=1

Question 3.

1

Answer: 0

Explination:

Subtract 1 from 1

1-1=0

Question 4.

6

Answer: 5

Explination:

Subtract 1 from 6

6-1=5

Question 5.

4

Answer: 3

Explination:

Subtract 1 from 4

4-1=3

Question 6.

2

Answer: 1

Explination:

Subtract 1 from 2

2-1=1

Question 7.

1

Answer: 0

Explination:

Subtract 1 from 1

1-1=0

Question 8.

3

Answer: 2

Explination:

Subtract 1 from 3

3-1=2

Question 9.

5

Answer: 4

Explination:

Subtract 1 from 4

4-1=3

Question 10.

7

Answer: 6

Explination:

Subtract 1 from 7

7-1=6

Question 11.

10

Answer: 9

Explination:

Subtract 1 from 10

10-1=9

Question 12.

9

Answer: 8

Explination:

Subtract 1 from 9

9-1=8

Question 13.

8

Answer: 7

Explination:

Subtract 1 from 8

8-1=7

Question 14.

6

Answer: 5

Explination:

Subtract 1 from 6

6-1=5

Question 15.

17

Answer: 16

Explination:

Subtract 1 from 17

17-1=16

Question 16.

10

Answer: 9

Explination:

Subtract 1 from 10

10-1=9

Question 17.

9

Answer: 8

Explination:

Subtract 1 from 9

9-1=8

Question 18.

11

Answer: 10

Explination:

Subtract 1 from 11

11-1=10

Question 19.

9

Answer: 8

Explination:

Subtract 1 from 8

9-1=8

Question 20.

13

Answer: 12

Explination:

Subtract 1 from 13

13-1=12

Question 21.

11

Answer: 10

Explination:

Subtract 1 from 11

11-1=10

Question 22.

1

Answer: 0

Explination:

Subtract 1 from 1

1-1=0

Question 23.

11

Answer: 10

Explination:

Subtract 1 from 11

11-1=10

Question 24.

21

Answer: 20

Explination:

Subtract 1 from 21

21-1=20

Question 25.

5

Answer: 4

Explination:

Subtract 1 from 4

5-1=4

Question 26.

15

Answer: 14

Explination:

Subtract 1 from 15

15-1=14

Question 27.

25

Answer: 24

Explination:

Subtract 1 from 25

25-1=24

Question 28.

20

Answer: 19

Explination:

Subtract 1 from 20

20-1=19

Question 29.

10

Answer: 9

Explination:

Subtract 1 from 10

10-1=9

Question 30.

21

Answer: 20

Explination:

Subtract 1 from 21

21-1=20

### Eureka Math Grade 1 Module 1 Lesson 28 Problem Set Answer Key

Read the story. Draw a horizontal line through the items that are leaving the story.

Then, complete the number bond, sentence, and statement.

Question 1.

There are 5 toy airplanes flying at the park. One went down and broke. How many airplanes are still flying?

5 – 1 = _____

There are ________ airplanes still flying.

Answer: 5 – 1 = 4

There are 4 airplanes still flying.

Question 2.

I had 6 eggs from the store.

Three of them were cracked.

How many eggs did I have that were not cracked?

6 – ___ = _____

_________ eggs were not cracked.

Answer: 6 – 3 = 3

3 eggs were not cracked.

Draw a number bond and math drawing to help you solve the problems.

Question 3.

Kate saw 8 cats playing in the grass.

Three went away to chase a mouse.

How many cats remained in the grass?

_____ – _____ = _____

________ cats remained in the grass.

Answer: 8-3=5

5 cats remained in the grass.

Question 4.

There were 7 mango slices.

Two of them were eaten.

How many mango slices are left to eat?

_____ – _____ = _____

There are ________ mango slices left.

Answer: 7-2=5

There are 5 mango slices left.

### Eureka Math Grade 1 Module 1 Lesson 28 Exit Ticket Answer Key

Read the problem. Make a math drawing to solve.

There were 9 kites flying in the park. Three kites got caught in trees. How many kites were still flying?

___ – ___ = ___

____ kites were still flying.

Answer: 9-3=6

__6__ kites were still flying.

### Eureka Math Grade 1 Module 1 Lesson 28 Homework Answer Key

Read the story. Make a math drawing to solve.

Question 1.

There were 6 hot dogs on the grill. Two finish cooking and are removed. How many hot dogs remain on the grill?

6 – ___ = ___

There are ____ hot dogs remaining on the grill.

Answer: 6-2=4

There are 4 hot dogs remaining on the grill.

Question 2.

Bob buys 8 new toy cars. He takes 3 out of the bag. How many cars are still in the bag?

___ – ___ = ___

____ cars are still in the bag.

Answer: 8-3=5

5 cars are still in the bag

Question 3.

Kira sees 7 birds in the tree. Three birds fly away. How many birds are still in the tree?

___ – ___ = ___

____ birds are still in the tree.

Answer: 7-3=4

4 birds are still in the tree.

Question 4.

Brad has 9 friends over for a party. Six friends get picked up. How many friends are still at the party?

___ – ___ = ___

____ friends are still at the party.

Answer: 9-6=3

3 friends are still at the party.

Question 5.

Jordan was playing with 10 cars. He gave 7 to Kate. How many cars is Jordan playing with now?

___ – ___ = ___

Jordan is playing with ____ cars now.

Answer: 10-7=3

Jordan is playing with 3 cars now.

Question 6.

Tony takes 4 books from the bookshelf. There were 10 books on the shelf to start. How many books are on the shelf now?

___ – ___ = ___

__ books are on the shelf now.

Answer: 10-4=6

6 books are on the shelf now.