## 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
Explination:
Subtract 1 from 5
5-1=4

Question 2.
4
Explination:
Subtract 1 from 4
4-1=3

Question 3.
3
Explination:
Subtract 1 from 3
3-1=2

Question 4.
5
Explination:
Subtract 1 from 5
5-1=4

Question 5.
3
Explination:
Subtract 1 from 3
3-1=2

Question 6.
1
Explination:
Subtract 1 from 1
1-1=0

Question 7.
4
Explination:
Subtract 1 from 4
4-1=3

Question 8.
5
Explination:
Subtract 1 from 5
5-1=4

Question 9.
7
Explination:
Subtract 1 from 7
7-1=6

Question 10.
6
Explination:
Subtract 1 from 6
6-1=5

Question 11.
7
Explination:
Subtract 1 from 7
7-1=6

Question 12.
9
Explination:
Subtract 1 from 9
9-1=8

Question 13.
8
Explination:
Subtract 1 from 8
8-1=7

Question 14.
9
Explination:
Subtract 1 from 9
9-1=8

Question 15.
10
Explination:
Subtract 1 from 10
10-1=9

Question 16.
10
Explination:
Subtract 1 from 10
10-1=9

Question 17.
8
Explination:
Subtract 1 from 8
8-1=7

Question 18.
11
Explination:
Subtract 1 from 11
11-1=10

Question 19.
10
Explination:
Subtract 1 from 10
10-1=9

Question 20.
9
Explination:
Subtract 1 from 9
9-1=8

Question 21.
1
Explination:
Subtract 1 from 1
1-1=0

Question 22.
11
Explination:
Subtract 1 from 11
11-1=10

Question 23.
21
Explination:
Subtract 1 from 21
21-1=20

Question 24.
4
Explination:
Subtract 1 from 4
4-1=3

Question 25.
14
Explination:
Subtract 1 from 14
14-1=13

Question 26.
24
Explination:
Subtract 1 from 24
24-1=23

Question 27.
10
Explination:
Subtract 1 from 10
10-1=9

Question 28.
20
Explination:
Subtract 1 from 20
20-1=19

Question 29.
21
Explination:
Subtract 1 from 21
21-1=20

Question 30.
31
Explination:
Subtract 1 from 31
31-1=30

B
*Write the number that is 1 less. Question 1.
3
Explination:
Subtract 1 from 3
3-1=2

Question 2.
2
Explination:
Subtract 1 from 2
2-1=1

Question 3.
1
Explination:
Subtract 1 from 1
1-1=0

Question 4.
6
Explination:
Subtract 1 from 6
6-1=5

Question 5.
4
Explination:
Subtract 1 from 4
4-1=3

Question 6.
2
Explination:
Subtract 1 from 2
2-1=1

Question 7.
1
Explination:
Subtract 1 from 1
1-1=0

Question 8.
3
Explination:
Subtract 1 from 3
3-1=2

Question 9.
5
Explination:
Subtract 1 from 4
4-1=3

Question 10.
7
Explination:
Subtract 1 from 7
7-1=6

Question 11.
10
Explination:
Subtract 1 from 10
10-1=9

Question 12.
9
Explination:
Subtract 1 from 9
9-1=8

Question 13.
8
Explination:
Subtract 1 from 8
8-1=7

Question 14.
6
Explination:
Subtract 1 from 6
6-1=5

Question 15.
17
Explination:
Subtract 1 from 17
17-1=16

Question 16.
10
Explination:
Subtract 1 from 10
10-1=9

Question 17.
9
Explination:
Subtract 1 from 9
9-1=8

Question 18.
11
Explination:
Subtract 1 from 11
11-1=10

Question 19.
9
Explination:
Subtract 1 from 8
9-1=8

Question 20.
13
Explination:
Subtract 1 from 13
13-1=12

Question 21.
11
Explination:
Subtract 1 from 11
11-1=10

Question 22.
1
Explination:
Subtract 1 from 1
1-1=0

Question 23.
11
Explination:
Subtract 1 from 11
11-1=10

Question 24.
21
Explination:
Subtract 1 from 21
21-1=20

Question 25.
5
Explination:
Subtract 1 from 4
5-1=4

Question 26.
15
Explination:
Subtract 1 from 15
15-1=14

Question 27.
25
Explination:
Subtract 1 from 25
25-1=24

Question 28.
20
Explination:
Subtract 1 from 20
20-1=19

Question 29.
10
Explination:
Subtract 1 from 10
10-1=9

Question 30.
21
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.
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.
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.
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.
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.
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.
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.
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.   