## Engage NY Eureka Math 2nd Grade Module 1 Lesson 8 Answer Key

### Eureka Math Grade 2 Module 1 Lesson 8 Problem Set Answer Key

Question 1.
Solve
a. 10 – 9  = 1,
2 + 1 = 3,
So 12 – 9 = 3,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 2 we will get 3,
therefore 12 – 9 = 3.

b. 22 – 9 = _13___
10 – 9  = 1,
12 + 1 = 13,
So 22 – 9 = 13,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 12 we will get 13,
therefore 22 – 9 = 13.

c. 42 – 9 = __33__
10 – 9  = 1,
32 + 1 = 3,
So 42 – 9 = 33,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 32 we will get 33,
therefore 42 – 9 = 33.

d. 13 – 8 = __5__
10 – 8  = 2,
3 + 2 = 5,
So 13 – 8 = 5,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 3 we will get 5,
therefore 13 – 8 = 5.

e. 23 – 8 = _15___
10 – 8  = 2,
13 + 2 = 15,
So 23 – 8 = 15,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 13 we will get 15,
therefore 23 – 8 = 15.

f. 53 – 8 = __45__
10 – 8  = 2,
43 + 2 = 45,
So 53 – 8 = 45,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 43 we will get 45,
therefore 53 – 8 = 45.

g. 14 – 6 = __8__
10 – 6  = 4,
4 + 4 = 8,
So 14 – 6 = 8,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 4 we will get 8,
therefore 14 – 6 = 8.

h. 24 – 6 = __18__
10 – 6  = 4,
14 + 4 = 18,
So 24 – 6 = 18,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 14 we will get 18,
therefore 24 – 6 = 18.

i. 84 – 6 = __78__
10 – 6  = 4,
74 + 4 = 78,
So 84 – 6 = 78,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 74 we will get 78,
therefore 84 – 6 = 78.

Question 2.
Solve.
a. 24 – 9 = _15___
10 – 9  = 1,
14 + 1 = 15,
So 24 – 9 = 15,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 14 we will get 15,
therefore 24 – 9 = 15.

b. 36 – 7 = _29___
10 – 7  = 3,
26 + 3 = 29,
So 36 – 7 = 29,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 26 we will get 29,
therefore 36 – 7 = 29.

c. 53 – 6 = __47__
10 – 6  = 4,
43 + 4 = 47,
So 53 – 6 = 47,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 43 we will get 47,
therefore 53 – 6 = 47.

d. 42 – 8 = _34___
10 – 8  = 2,
32 + 2  = 34,
So 42 – 8 = 34,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 32 we will get 34,
therefore 42 – 8 = 34.

e. 61 – 5 = _56___
10 – 5  = 5,
51 + 5 = 56,
So 61 – 5 = 56,

Explanation:
Solved 10 – 5 as substracting 5 from 10
we will get 5 and adding 5 to 51 we will get 56,
therefore 61 – 5 = 56.

f. 85 – 8 = __77__
10 – 8  = 2,
75 + 2 = 77,
So 85 – 8 = 77,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 75 we will get 77,
therefore 85 – 8 = 77.

Question 3.
Mrs. Watts had 17 tacos. The children ate some.
Nine tacos were left.
How many tacos did the children eat?

____________8 tacos________________
Children ate 8 tacos,

Explanation:
Given Mrs. Watts had 17 tacos. The children ate some.
Nine tacos were left. So tacos did the children ate are
17 – 9 = 8 tacos, therefore children ate 8 tacos.

### Eureka Math Grade 2 Module 1 Lesson 8 Exit Ticket Answer Key

Solve.

Question 1.
21 – 9 = __12___
10 – 9  = 1,
11 + 1 = 12,
So 21 – 9 = 12,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 11 we will get 12,
therefore 21 – 9 = 12.

Question 2.
34 – 8 = _26____
10 – 8  = 2,
24 + 2 = 26,
So 34 – 8 = 26,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 24 we will get 26,
therefore 34 – 8 = 26.

Question 3.
82 – 7 = __75___
10 – 7  = 3,
72 + 3 = 75,
So 82 – 7 = 75,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 72 we will get 75,
therefore 82 – 7 = 75.

### Eureka Math Grade 2 Module 1 Lesson 8 Homework Answer Key

Question 1.
Take out ten.  26 – 10 = 16,
34 – 10 = 24,
58 – 10 = 48,
85 – 10 = 75,
77 -10 = 67,
96 – 10 = 86,

Explanation:
Given to take out ten from 26,
So 26 – 10 = 16, so 26 = 16 +10,
taking 10 from 24 we get 14, as
24 = 14 + 10, taking 10 from 58 we get
48,  as 58 = 48 + 10, taking 10 from 85
we get 75, as 75 + 10 = 85, taking 10
from 77 we get 67, as 77 = 67 + 10 and taking 10
from 96 we get 86 as 96 = 86 +10 as shown above.

Question 2.
Solve.
10 – 1 = __9___
10 – 5 = __5___
10 – 2 = __8___
10 – 4 = ___6__
10 – 7 = ___3__
10 – 8 = __2___
10 – 1 = 9,
10 – 5  = 5,
10 – 2 = 8,
10 – 4 = 6,
10 – 7 = 3,
10 – 8 = 2,

Explanation:
Solved by substracting 1 from 10 we will get 9,
5 from 10 we will get 5,
2 from 10 we will get 8,
4 from 10 we will get 6,
7 from 10 we will get 3 and
8 from 10 we will get 2.

Question 3.
Solve.
a. 13 – 7 = ___6__
10 – 7  = 3,
3 + 3 = 6,
So 13 – 7 = 6,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 3 we will get 6,
therefore 13 – 7 = 6.

b. 15 – 8 = __7___
10 – 8  = 2,
5 + 2 = 7,
So 15 – 8 = 7,

Explanation:
Solved 10 – 8 as substracting 8 from 10
we will get 2 and adding 2 to 5 we will get 7,
therefore 15 – 8 = 7.

c. 14 – 6 = __8___
10 – 6  = 4,
4 + 4 = 8,
So 14 – 6 = 8,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 4 we will get 8,
therefore 14 – 6 = 8.

d. 16 – 9 = __7___
10 – 9  = 1,
6 + 1 = 7,
So 16 – 9 = 7,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 6 we will get 7,
therefore 16 – 9 = 7.

e. 42 – 7 = __35___
10 – 7  = 3,
32 + 3 = 35,
So 42 – 7 = 35,

Explanation:
Solved 10 – 7 as substracting 7 from 10
we will get 3 and adding 3 to 32 we will get 35,
therefore 42 – 7 = 35.

f. 54 – 6 = __48___
10 – 6  = 4,
44 + 4 = 48,
So 54 – 6 = 48,

Explanation:
Solved 10 – 6 as substracting 6 from 10
we will get 4 and adding 4 to 44 we will get 48,
therefore 54 – 6 = 48.

g. 71 – 5 = __66___
10 – 5  = 5,
61 + 5 = 66,
So 71 – 5 = 66,

Explanation:
Solved 10 – 5 as substracting 5 from 10
we will get 5 and adding 5 to 61 we will get 66,
therefore 71 – 5 = 66.

h. 92 – 9 = _83____
10 – 9  = 1,
82 + 1 = 83,
So 92 – 9 = 83,

Explanation:
Solved 10 – 9 as substracting 9 from 10
we will get 1 and adding 1 to 82 we will get 83,
therefore 92 – 9 = 83.

Question 4.
Emma has 16 markers. She gave Jack some.
Seven markers are left.
How many markers did Emma give Jack?

_______9_________