## 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.

Answer:

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___

Answer:

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__

Answer:

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__

Answer:

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___

Answer:

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__

Answer:

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__

Answer:

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__

Answer:

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__

Answer:

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___

Answer:

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___

Answer:

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__

Answer:

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___

Answer:

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___

Answer:

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__

Answer:

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________________

Answer:

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___

Answer:

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____

Answer:

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___

Answer:

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.

Answer:

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___

Answer:

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__

Answer:

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___

Answer:

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___

Answer:

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___

Answer:

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___

Answer:

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___

Answer:

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___

Answer:

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____

Answer:

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_________

Answer:

9 markers Emma gave to Jack,

Explanation:

Given Emma has 16 markers. She gave Jack some.

Seven markers are left. So number of markers did

Emma gave Jack are 16 -7 = 9.