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

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

A.

Adding across a Ten:

Question 1.

8 + 1 =

Answer: 9

By adding 8 with 1 we get 9

Question 2.

18 + 1 =

Answer: 19

By adding 18 with 1 we get 19

Question 3.

28 + 1 =

Answer: 39

By adding 28 with 1 we get 39

Question 4.

58 + 1 =

Answer: 59

By adding 58 with 1 we get 59

Question 5.

7 + 2 =

Answer: 9

By adding 7 with 2 we get 9

Question 6.

17 + 2 =

Answer: 19

By adding 17 with 2 we get 19

Question 7.

27 + 2 =

Answer: 29

By adding 27 with 2 we get 29

Question 8.

57 + 2 =

Answer: 59

By adding 57 with 2 we get 59

Question 9.

6 + 3 =

Answer: 9

By adding 6 with 3 we get 9

Question 10.

36 + 3 =

Answer: 39

By adding 36 with 3 we get 39

Question 11.

5 + 4 =

Answer: 9

By adding 5 with 4 we get 9

Question 12.

45 + 4 =

Answer: 49

By adding 45 with 4 we get 49

Question 13.

30 + 9 =

Answer: 39

By adding 30 with 9 we get 39

Question 14.

9 + 2 =

Answer: 11

By adding 9 with 2 we get 11

Question 15.

39 + 2 =

Answer: 41

By adding 39 with 2 we get 41

Question 16.

50 + 8 =

Answer: 58

By adding 50 with 8 we get 58

Question 17.

8 + 4 =

Answer: 12

By adding 8 with 4 we get 12

Question 18.

58 + 4 =

Answer: 62

By adding 58 with 4 we get 62

Question 19.

50 + 20 =

Answer: 70

By adding 50 with 20 we get 70

Question 20.

54 + 20 =

Answer: 74

By adding 54 with 20 we get 74

Question 21.

70 + 20 =

Answer: 90

By adding 70 with 20 we get 90

Question 22.

76 + 20 =

Answer: 96

By adding 76 with 20 we get 96

Question 23.

50 + 30 =

Answer: 80

By adding 50 with 30 we get 80

Question 24.

58 + 30 =

Answer: 88

By adding 58 with 30 we get 88

Question 25.

9 + 3 =

Answer: 12

By adding 9 with 3 we get 12

Question 26.

90 + 30 =

Answer: 120

By adding 90 with 30 we get 120

Question 27.

97 + 30 =

Answer: 127

By adding 97 with 30 we get 127

Question 28.

8 + 4 =

Answer: 12

By adding 8 with 4 we get 12

Question 29.

80 + 40 =

Answer: 120

By adding 80 with 40 we get 120

Question 30.

83 + 40 =

Answer: 123

By adding 83 with 40 we get 123

Question 31.

83 + 4 =

Answer: 87

By adding 83 with 4 we get 87

Question 32.

7 + 6 =

Answer: 13

By adding 7 with 6 we get 13

Question 33.

70 + 60 =

Answer: 130

By adding 70 with 60 we get 130

Question 34.

74 + 60 =

Answer: 134

By adding 74 with 60 we get 134

Question 35.

74 + 5 =

Answer: 79

By adding 74 with 5 we get 79

Question 36.

73 + 6 =

Answer: 79

By adding 73 with 6 we get 79

Question 37.

58 + 7 =

Answer: 65

By adding 58 with 7 we get 65

Question 38.

76 + 5 =

Answer: 81

By adding 76 with 5 we get 81

Question 39.

30 + 40 =

Answer: 70

By adding 30 with 40 we get 70

Question 40.

20 + 70 =

Answer: 90

By adding 20 with 70 we get 90

Question 41.

80 + 70 =

Answer: 150

By adding 80 with 70 we get 150

Question 42.

34 + 40 =

Answer: 74

By adding 34 with 40 we get 74

Question 43.

23 + 50 =

Answer: 73

By adding 23 with 50 we get 73

Question 44.

97 + 60 =

Answer: 157

By adding 97 with 60 we get 157

B.

Adding across a Ten:

Question 1.

7 + 1 =

Answer: 8

By adding 7 with 1 we get 8

Question 2.

17 + 1 =

Answer: 18

By adding 17 with 1 we get 18

Question 3.

27 + 1 =

Answer: 28

By adding 27 with 1 we get 28

Question 4.

47 + 1 =

Answer: 48

By adding 47 with 1 we get 48

Question 5.

6 + 2 =

Answer: 8

By adding 6 with 2 we get 8

Question 6.

16 + 2 =

Answer: 18

By adding 16 with 2 we get 18

Question 7.

26 + 2 =

Answer: 28

By adding 26 with 2 we get 28

Question 8.

46 + 2 =

Answer: 48

By adding 46 with 2 we get 48

Question 9.

5 + 3 =

Answer: 8

By adding 5 with 3 we get 8

Question 10.

75 + 3 =

Answer: 78

By adding 75 with 3 we get 78

Question 11.

5 + 4 =

Answer: 9

By adding 5 with 4 we get 9

Question 12.

75 + 4 =

Answer: 79

By adding 75 with 4 we get 79

Question 13.

40 + 9 =

Answer: 49

By adding 40 with 9 we get 49

Question 14.

9 + 2 =

Answer: 11

By adding 9 with 2 we get 11

Question 15.

49 + 2 =

Answer: 51

By adding 49 with 2 we get 51

Question 16.

60 + 8 =

Answer: 68

By adding 60 with 8 we get 68

Question 17.

8 + 4 =

Answer: 12

By adding 8 with 4 we get 12

Question 18.

68 + 4 =

Answer: 72

By adding 68 with 4 we get 72

Question 19.

50 + 20 =

Answer: 70

By adding 50 with 20 we get 70

Question 20.

56 + 20 =

Answer: 76

By adding 56 with 20 we get 76

Question 21.

70 + 20 =

Answer: 90

By adding 70 with 20 we get 90

Question 22.

74 + 20 =

Answer: 94

By adding 74 with 20 we get 94

Question 23.

50 + 30 =

Answer: 80

By adding 50 with 30 we get 80

Question 24.

57 + 30 =

Answer: 87

By adding 57 with 30 we get 87

Question 25.

8 + 3 =

Answer: 11

By adding 8 with 3 we get 11

Question 26.

80 + 30 =

Answer: 110

By adding 80 with 30 we get 110

Question 27.

87 + 30 =

Answer: 117

By adding 87 with 30 we get 117

Question 28.

9 + 4 =

Answer: 13

By adding 9 with 4 we get 13

Question 29.

90 + 40 =

Answer: 130

By adding 90 with 40 we get 130

Question 30.

93 + 40 =

Answer: 133

By adding 93 with 40 we get 133

Question 31.

93 + 4 =

Answer: 98

By adding 93 with 4 we get 98

Question 32.

8 + 6 =

Answer: 14

By adding 8 with 6 we get 14

Question 33.

80 + 60 =

Answer: 140

By adding 80 with 60 we get 140

Question 34.

84 + 60 =

Answer: 144

By adding 84 with 60 we get 144

Question 35.

84 + 5 =

Answer: 89

By adding 84 with 5 we get 89

Question 36.

83 + 6 =

Answer: 89

By adding 83 with 6 we get 89

Question 37.

68 + 7 =

Answer: 75

By adding 68 with 7 we get 75

Question 38.

86 + 5 =

Answer: 91

By adding 86 with 5 we get 91

Question 39.

20 + 30 =

Answer: 50

By adding 20 with 30 we get 50

Question 40.

30 + 60 =

Answer: 90

By adding 30 with 60 we get 90

Question 41.

90 + 70 =

Answer: 160

By adding 90 with 70 we get 160

Question 42.

36 + 40 =

Answer: 76

By adding 36 with 40 we get 76

Question 43.

27 + 50 =

Answer: 77

By adding 27 with 50 we get 77

Question 44.

94 + 70 =

Answer: 164

By adding 94 with 70 we get 164

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

Question 1.

Identify the number of sides and angles for each shape. Circle each angle as you count, if needed. The first one has been done for you.

a.

Answer:

3 sides

3 angles

b.

Answer:

c.

Answer:

d.

Answer:

e.

Answer:

f.

Answer:

g.

Answer:

h.

Answer:

i.

Answer:

Question 2.

Study the shapes below. Then, answer the questions.

a.

Which shape has the most sides?

Answer: The figure F has 10 sides

b.

Which shape has 3 more angles than shape C?

Answer: F has 3 more angles than shape C

c.

Which shape has 3 fewer sides than shape B?

Answer: A has 3 fewer sides than shape B

d.

How many more angles does shape C have than shape A?

Answer: Shape C has 4 more angles than shape A.

e.

Which of these shapes have the same number of sides and angles?

Answer: Shape C and E has same number of sides and angles

Question 3.

Ethan said the two shapes below are both six-sided figures but just different sizes. Explain why he is incorrect.

Answer: The first is octagon and the second figure is hexagon. the first figure is not six sided figure it has 8 sides.

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

Study the shapes below. Then, answer the questions:

Question 1.

Which shape has the most sides?

Answer: C

Question 2.

Which shape has 3 fewer angles than shape C?

Answer: Shape D has 3 fewer angles than shape C

Question 3.

Which shape has 3 more sides than shape B?

Answer: Shape A has 3 more sides than shape B

Question 4.

Which of these shapes have the same number of sides and angles?

Answer: None

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

Question 1.

Identify the number of sides and angles for each shape. Circle each angle as you count, if needed.

a.

Answer:

3 sides

3 angles

b.

Answer:

4 sides

4 angles

c.

Answer:

5 sides

5 angles

d.

Ans:

8 sides

8 angles

e.

Ans:

6 sides

6 angles

f.

Answer:

4 sides

4 angles

Answer:

7 sides

7 angles

h.

Answer:

7 sides

7 angles

i.

Answer:

6 sides

6 angles

Question 2.

Study the shapes below. Then, answer the questions.

a.

Which shape has the most angles?

Answer: Shape D has most angles.

b.

Which shape has 4 more angles than shape F?

Answer:

Shape D has 4 more angles than shape F.

c.

Which shape has 5 fewer sides than shape D?

Answer: Shape E has 5 fewer sides than Shape D.

d.

How many more angles does shape A have than shape B?

Answer: Shape A has 6 more angles than shape B.

e.

Which of these shapes have the same number of sides and angles?

Answer: shape B and Shape F have same number of sides and angles.

Question 3.

Joseph’s teacher said to make shapes with 6 sides and 6 angles on his geoboard. Shade the shapes that share these attributes, and circle the shape that does not belong. Explain why it does not belong.

Answer:

The shape I circled has 7 sides and 7 angles. It does not belong.