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## Engage NY Eureka Math 2nd Grade Module 4 Lesson 15 Answer Key

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### Eureka Math Grade 2 Module 4 Lesson 15 Sprint Answer Key

A. Two-Digit Subtraction

53 – 2 = 51, 65 – 3 = 62, 77 – 4 = 73, 89 – 5 = 84, 99 – 6 = 93, 28 – 7 = 21, 39 – 8 = 31, 31 – 2 = 29, 41 – 3 = 38, 51 – 4 = 46, 61 – 5 = 46, 30 – 9 = 21, 40 – 8 = 32, 50 – 7 = 43, 60 – 6 = 54, 40 – 30 = 10, 41 – 30 = 11, 40 – 20 = 20, 42 – 20 = 12, 80 – 50 = 30, 85 – 50 = 35, 80 – 40 = 40, 84 – 40 = 44, 80 – 50 = 30, 86 – 50 = 36, 70 – 60 = 10, 77 – 60 = 17, 80 – 70 = 10, 88 – 70 = 18, 48 – 4 = 44, 80 – 40 = 40, 81 – 40 = 41, 46 – 3 = 43, 60 – 30 = 30, 68 – 30 = 38, 67 – 4 = 63, 89 – 6 = 83, 89 – 60 = 29, 76 – 2 = 74, 76 – 20 = 56, 54 – 6 = 48, 65 – 8 = 57, 87 – 9 = 78.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
53 – 2 = 51, 65 – 3 = 62, 77 – 4 = 73, 89 – 5 = 84, 99 – 6 = 93, 28 – 7 = 21, 39 – 8 = 31, 31 – 2 = 29, 41 – 3 = 38, 51 – 4 = 46, 61 – 5 = 46, 30 – 9 = 21, 40 – 8 = 32, 50 – 7 = 43, 60 – 6 = 54, 40 – 30 = 10, 41 – 30 = 11, 40 – 20 = 20, 42 – 20 = 12, 80 – 50 = 30, 85 – 50 = 35, 80 – 40 = 40, 84 – 40 = 44, 80 – 50 = 30, 86 – 50 = 36, 70 – 60 = 10, 77 – 60 = 17, 80 – 70 = 10, 88 – 70 = 18, 48 – 4 = 44, 80 – 40 = 40, 81 – 40 = 41, 46 – 3 = 43, 60 – 30 = 30, 68 – 30 = 38, 67 – 4 = 63, 89 – 6 = 83, 89 – 60 = 29, 76 – 2 = 74, 76 – 20 = 56, 54 – 6 = 48, 65 – 8 = 57, 87 – 9 = 78.

Question 1.
53 – 2 = 51.

53 – 2 = 51.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
53 – 2 = 51.
51 + 2 = 53.

Question 2.
65 – 3 = 62.

65 – 3 = 62.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
65 – 3 = 62.
62 + 3 = 65.

Question 3.
77 – 4 = 73.

77 – 4 = 73.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
77 – 4 = 73.
73 + 4 = 77.

Question 4.
89 – 5 = 84.

89 – 5 = 84.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
89 – 5 = 84.
84 + 5 = 89.

Question 5.
99 – 6 = 93.

99 – 6 = 93.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
99 – 6 = 93.
93 + 6 = 99.

Question 6.
28 – 7 = 21.

28 – 7 = 21.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
28 – 7 = 21.
21 + 7 = 28.

Question 7.
39 – 8 = 31.

39 – 8 = 31.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
39 – 8 = 31.
31 + 8 = 39.

Question 8.
31 – 2 = 29.

31 – 2 = 29.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
31 – 2 = 29.
29 + 2 = 31.

Question 9.
41 – 3 = 38.

41 – 3 = 38.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
41 – 3 = 38.
38 + 3 = 41.

Question 10.
51 – 4 = 47.

51 – 4 = 47.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
51 – 4 = 47.
47 + 4 = 51.

Question 11.
61 – 5 = 56.

61 – 5 = 56.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
61 – 5 = 56.
56 + 5 = 61.

Question 12.
30 – 9 = 21.

30 – 9 = 21.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
30 – 9 = 21.
21 + 9 = 30.

Question 13.
40 – 8 = 32.

40 – 8 = 32.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
40 – 8 = 32.
32 + 8 = 40.

Question 14.
50 – 7 = 43.

50 – 7 = 43.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
50 – 7 = 43.
43 + 7 = 50.

Question 15.
60 – 6 = 54.

60 – 6 = 54.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
60 – 6 = 54.
54 + 6 = 60.

Question 16.
40 – 30 = 10.

40 – 30 = 10.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
40 – 30 = 10.
10 + 30 = 40.

Question 17.
41 – 30 = 11.

41 – 30 = 11.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
41 – 30 = 11.
11 + 30 = 41.

Question 18.
40 – 20 = 20.

40 – 20 = 20.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
40 – 20 = 20.
20 + 20 = 40.

Question 19.
42 – 20 = 22.

42 – 20 = 22.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
42 – 20 = 22.
22 + 20 = 42.

Question 20.
80 – 50 = 30.

80 – 50 = 30.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
80 – 50 = 30.
30 + 50 = 80.

Question 21.
85 – 50 = 35.

85 – 50 = 35.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
85 – 50 = 35.
35 + 50 = 85.

Question 22.
80 – 40 = 40.

80 – 40 = 40.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
80 – 40 = 40.
40 + 40 = 80.

Question 23.
84 – 40 = 44.

84 – 40 = 44.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
84 – 40 = 44.
44 + 40 = 84.

Question 24.
80 – 50 = 30.

80 – 50 = 30.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
80 – 50 = 30.
30 + 50 = 80.

Question 25.
86 – 50 = 36.

86 – 50 = 36.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
86 – 50 = 36.
36 + 50 = 86.

Question 26.
70 – 60 = 10.

70 – 60 = 10.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
70 – 60 = 10.
10 + 60 = 70.

Question 27.
77 – 60 = 17.

77 – 60 = 17.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
77 – 60 = 17.
17 + 60 = 77.

Question 28.
80 – 70 = 10.

80 – 70 = 10.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
80 – 70 = 10.
10 + 70 = 80.

Question 29.
88 – 70 = 18.

88 – 70 = 18.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
88 – 70 = 18.
18 + 70 = 88.

Question 30.
48 – 4 = 44.

48 – 4 = 44.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
48 – 4 = 44.
44 + 4 = 48.

Question 31.
80 – 40 = 40.

80 – 40 = 40.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
80 – 40 = 40.
40 + 40 = 80.

Question 32.
81 – 40 = 41.

81 – 40 = 41.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
81 – 40 = 41.
41 + 40 = 81.

Question 33.
46 – 3 = 43.

46 – 3 = 43.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
46 – 3 = 43.
43 + 3 = 46.

Question 34.
60 – 30 = 30.

60 – 30 = 30.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
60 – 30 = 30.
30 + 30 = 60.

Question 35.
68 – 30 = 38.

68 – 30 = 38.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
68 – 30 = 38.
38 + 30 = 68.

Question 36.
67 – 4 = 63.

67 – 4 = 63.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
67 – 4 = 63.
63 + 4 = 67.

Question 37.
67 – 40 = 27.

67 – 40 = 27.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
67 – 40 = 27.
27 + 40 = 67.

Question 38.
89 – 6 = 83.

89 – 6 = 83.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
89 – 6 = 83.
83 + 6 = 89.

Question 39.
89 – 60 = 29.

89 – 60 = 29.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
89 – 60 = 29.
29 + 60 = 89.

Question 40.
76 – 2 = 74.

76 – 2 = 74.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
76 – 2 = 74.
74 + 2 = 76.

Question 41.
76 – 20 = 56

76 – 20 = 56.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
76 – 20 = 56.
56 + 20 = 76.

Question 42.
54 – 6 = 38.

54 – 6 = 38.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
54 – 6 = 38.
38 + 6 = 54.

Question 43.
65 – 8 = 57.

65 – 8 = 57.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
65 – 8 = 57.
57 + 8 = 65.

Question 44.
87 – 9 = 78.

87 – 9 = 78.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
87 – 9 = 78.
78 + 9 = 87.

B. Two-Digit Subtraction

43 – 2 = 41, 55 – 3 = 52, 67 – 4 = 63, 79 – 5 = 74, 89 – 6 = 83, 98 – 7 = 91, 29 – 8 = 21, 21 – 2 = 19, 31 – 3 = 28, 41 – 4 = 37, 51 – 5 = 46, 20 – 9 = 11, 30 – 8 = 22, 40 – 7 = 33, 50 – 6 = 44, 30 – 20 = 10, 31 – 20 = 11, 50 – 30 = 20, 52 – 30 = 22, 70 – 40 = 30, 75 – 40 = 35, 90 – 50 = 40, 94 – 50 = 44, 90 – 60 = 30, 96 – 60 = 36, 80 – 70 = 10, 87 – 70 = 17, 90 – 80 = 10, 98 – 80 = 18, 39 – 4 = 35, 90 – 40 = 50, 91 – 40 = 51, 47 – 3 = 44, 70 – 30 = 40, 78 – 30 = 48, 68 – 4 = 64, 68 – 40 = 48, 89 – 7 = 82, 89 – 70 = 19, 56 – 2 = 54, 56 – 20 = 44, 34 – 6 = 28, 45 – 8 = 37, 57 – 9 = 48.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
43 – 2 = 41, 55 – 3 = 52, 67 – 4 = 63, 79 – 5 = 74, 89 – 6 = 83, 98 – 7 = 91, 29 – 8 = 21, 21 – 2 = 19, 31 – 3 = 28, 41 – 4 = 37, 51 – 5 = 46, 20 – 9 = 11, 30 – 8 = 22, 40 – 7 = 33, 50 – 6 = 44, 30 – 20 = 10, 31 – 20 = 11, 50 – 30 = 20, 52 – 30 = 22, 70 – 40 = 30, 75 – 40 = 35, 90 – 50 = 40, 94 – 50 = 44, 90 – 60 = 30, 96 – 60 = 36, 80 – 70 = 10, 87 – 70 = 17, 90 – 80 = 10, 98 – 80 = 18, 39 – 4 = 35, 90 – 40 = 50, 91 – 40 = 51, 47 – 3 = 44, 70 – 30 = 40, 78 – 30 = 48, 68 – 4 = 64, 68 – 40 = 48, 89 – 7 = 82, 89 – 70 = 19, 56 – 2 = 54, 56 – 20 = 44, 34 – 6 = 28, 45 – 8 = 37, 57 – 9 = 48.

Question 1.
43 – 2 = 41.

43 – 2 = 41.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
43 – 2 = 41.
41 + 2 = 43.

Question 2.
55 – 3 = 52.

55 – 3 = 52.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
55 – 3 = 52.
52 + 3 = 55.

Question 3.
67 – 4 = 63.

67 – 4 = 63.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
67 – 4 = 63.
63 + 4 = 67.

Question 4.
79 – 5 = 74.

79 – 5 = 74.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
79 – 5 = 74.
74 + 5 = 79.

Question 5.
89 – 6 = 83.

89 – 6 = 83.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
89 – 6 = 83.
83 + 6 = 9.

Question 6.
98 – 7 = 91.

98 – 7 = 91.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
98 – 7 = 91.
91 + 7 = 98.

Question 7.
29 – 8 = 21.

29 – 8 = 21.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
29 – 8 = 21.
21 + 8 = 29.

Question 8.
21 – 2 = 19.

21 – 2 = 19.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
21 – 2 = 19.
19 + 2 = 21.

Question 9.
31 – 3 = 29.

31 – 3 = 29.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
31 – 3 = 29.
29 + 3 = 31.

Question 10.
41 – 4 = 37.

41 – 4 = 37.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
41 – 4 = 37.
37 + 4 = 41.

Question 11.
51 – 5 = 46.

51 – 5 = 46.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
51 – 5 = 46.
46 + 5 = 51.

Question 12.
20 – 9 = 11.

20 – 9 = 11.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
20 – 9 = 11.
11 + 9 = 20.

Question 13.
30 – 8 = 22.

30 – 8 = 22.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
30 – 8 = 22.
22 + 8 = 30.

Question 14.
40 – 7 = 33.

40 – 7 = 33.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
40 – 7 = 33.
33 + 7 = 40.

Question 15.
50 – 6 = 44.

50 – 6 = 44.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
50 – 6 = 44.
44 + 6 = 50.

Question 16.
30 – 20 = 10.

30 – 20 = 10.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
30 – 20 = 10.
10 + 20 = 30.

Question 17.
31 – 20 = 11.

31 – 20 = 11.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
31 – 20 = 11.
11 + 20 = 31.

Question 18.
50 – 30 = 20.

50 – 30 = 20.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
50 – 30 = 20.
20 + 30 = 50.

Question 19.
52 – 30 = 22.

52 – 30 = 22.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
52 – 30 = 22.
22 + 30 = 52.

Question 20.
70 – 40 = 30.

70 – 40 = 30.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
70 – 40 = 30.
30 + 40 = 70.

Question 21.
75 – 40 = 35.

75 – 40 = 35.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
75 – 40 = 35.
35 + 40 = 75.

Question 22.
90 – 50 = 40.

90 – 50 = 40.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
90 – 50 = 40.
40 + 50 = 90.

Question 23.
94 – 50 = 44.

94 – 50 = 44.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
94 – 50 = 44.
44 + 50 = 94.

Question 24.
90 – 60 = 30.

90 – 60 = 30.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
90 – 60 = 30.
30 + 60 = 90.

Question 25.
96 – 60 = 36.

96 – 60 = 36.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
96 – 60 = 36.
36 + 60 = 96.

Question 26.
80 – 70 = 10.

80 – 70 = 10.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
80 – 70 = 10.
10 + 70 = 80.

Question 27.
87 – 70 = 17.

87 – 70 = 17.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
87 – 70 = 17.
17 + 70 = 87.

Question 28.
90 – 80 = 10.

90 – 80 = 10.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
90 – 80 = 10.
10 + 80 = 90.

Question 29.
98 – 80 = 18.

98 – 80 = 18.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
98 – 80 = 18.
18 +80 = 98.

Question 30.
39 – 4 = 35.

39 – 4 = 35.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
39 – 4 = 35.
35 + 4 = 39.

Question 31.
90 – 40 = 50.

90 – 40 = 50.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
90 – 40 = 50.
50 + 40 = 90.

Question 32.
91 – 40 = 51.

91 – 40 = 51.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
91 – 40 = 51.
51 + 40 = 91.

Question 33.
47 – 3 = 44.

47 – 3 = 44.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
47 – 3 = 44.
44 + 3 = 47.

Question 34.
70 – 30 = 40.

70 – 30 = 40.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
70 – 30 = 40.
40 + 30 = 70.

Question 35.
78 – 30 = 48.

78 – 30 = 48.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
78 – 30 = 48.
48 + 30 = 78.

Question 36.
68 – 4 = 64.

68 – 4 = 64.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
68 – 4 = 64.
64 + 4 = 68.

Question 37.
68 – 40 = 28.

68 – 40 = 28.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
68 – 40 = 28.
28 + 40 = 68.

Question 38.
89 – 7 = 82.

89 – 7 = 82.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
89 – 7 = 82.
82 + 7 = 89.

Question 39.
89 – 70 = 19.

89 – 70 = 19.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
89 – 70 = 19.
19 + 70 = 89.

Question 40.
56 – 2 = 54.

56 – 2 = 54.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
56 – 2 = 54.
54 + 2 = 56.

Question 41.
56 – 20 = 36.

56 – 20 = 36.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
56 – 20 = 36.
36 + 20 = 56.

Question 42.
34 – 6 = 28.

34 – 6 = 28.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
34 – 6 = 28.
28 + 6 = 34.

Question 43.
45 – 8 = 37.

45 – 8 = 37.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
45 – 8 = 37.
37 + 8 = 45.

Question 44.
57 – 9 = 48.

57 – 9 = 48.

Explanation:
In the above-given question,
given that,
subtract the two-digit numbers.
57 – 9 = 48.
48 + 9 = 57.

### Eureka Math Grade 2 Module 4 Lesson 15 Problem Set Answer Key

Question 1.
Solve each problem using vertical form. Show the subtraction on the place value chart with chips. Exchange 1 ten for 10 ones, when necessary.
a. 173 – 42

173 – 42 = 131.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
7 x 10 = 70.
3 x 1 = 3.
4 x 10 = 40.
2 x 1 = 2.
100 + 70 + 3 = 173.
40 + 2 = 42.
173 – 42 = 131.

b. 173 – 38

173 – 38 = 165.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
7 x 10 = 70.
3 x 1 = 3.
3 x 10 = 30.
8 x 1 = 8.
100 + 70 + 3 = 173.
30 + 8 = 38.
173 – 38 = 165.

c. 170 – 44

170 – 44 = 126.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
7 x 10 = 70.
4 x 10 = 40.
4 x 1 = 4.
100 + 70 = 170.
40 + 4 = 44.
170 – 44 = 126.

d. 150 – 19

150 – 19 = 131.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
5 x 10 = 50.
1 x 10 = 10.
9 x 1 = 9.
100 + 50 = 150.
10 + 9 = 19.
150 – 19 = 131.

e. 186 – 57

186 – 57 = 129.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
8 x 10 = 80.
6 x 1 = 6.
100 + 80 + 6 = 186.
5 x 10 = 50.
7 x 1 = 7.
50 + 7 = 57.
186 – 57 = 129.

Question 2.
Solve the following problems without using a place value chart.
a. 73 – 56

73 – 56 = 17.

Explanation:
In the above-given question,
given that,
solve the problem without using a place value chart.
7 x 10 = 70.
3 x 1 = 3.
5 x 10 = 50.
6 x 1 = 6.
70 + 3 = 73.
50 + 6 = 56.
73 – 56 = 17.

b. 170 – 53

170 – 53 = 117.

Explanation:
In the above-given question,
given that,
solve the problem without using a place value chart.
1 x 100 = 100.
7 x 10 = 70.
5 x 10 = 50.
3 x 1 = 3.
100 + 70 = 170.
50 + 3 = 53.
170 – 53 = 117.

### Eureka Math Grade 2 Module 4 Lesson 15 Exit Ticket Answer Key

Solve using vertical form. Show the subtraction on a place value chart with chips. Exchange 1 ten for 10 ones, when necessary.

Question 1.
164 – 49

164 – 49 = 115.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
6 x 10 = 60.
4 x 1 = 4.
4 x 10 = 40.
9 x 1 = 9.
100 + 60 + 4 = 164.
40 + 9 = 49.
164 – 49 = 115.

Question 2.
181 – 73

181 – 73 = 118.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
8 x 10 = 80.
1 x 1 = 1.
7 x 10 = 70.
3 x 1 = 3.
183 – 73 = 118.

### Eureka Math Grade 2 Module 4 Lesson 15 Homework Answer Key

Question 1.
Solve each problem using vertical form. Show the subtraction on the place value chart with chips. Exchange 1 ten for 10 ones, when necessary.
a. 153 – 31

153 – 31 = 122.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
5 x 10 = 50.
3 x 1 = 3.
3 x 10 = 30.
1 x 1 = 1.
100 + 50 + 3 = 153.
30 + 1 = 31.
153 – 31 = 122.

b. 153 – 38

153 – 38 = 115.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
5 x 10 = 50.
3 x 1 = 3.
3 x 10 = 30.
8 x 1 = 8.
100 + 50 + 3 = 153.
30 + 8 = 38.
153 – 38 = 115.

c. 160 – 37 = 123

160 – 37 = 123.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
6 x 10 = 60.
3 x 10 = 30.
7 x 1 = 7.
100 + 60 + 0 = 160.
30 + 7 = 37.
160 – 37 = 123.

d. 182 – 59 = 123.

182 – 59 = 123.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
8 x 10 = 80.
2 x 1 = 2.
5 x 10 = 50.
9 x 1 = 9.
100 + 80 + 2 = 182.
50 + 9 = 59.
182 – 59 = 123.

Question 2.
Lisa solved 166 – 48 vertically and on her place value chart. Explain what Lisa did correctly and what she needs to fix.

a. Lisa correctly _________________________________________________
_________________________________________________________________

Lisa did correctly 166.

Explanation:
In the above-given question,
given that,
1 x 100 = 100.
6 x 10 = 60.
6 x 1 = 6.
100 + 60 + 6 = 166.

b. Lisa needs to fix _______________________________________________
___________________________________________________________________

Lisa needs to fix 118.
166 – 48 = 118.

Explanation:
In the above-given question,
given that,
drawing chips on the place value chart.
change 1 ten for 10 ones when needed.
1 x 100 = 100.
6 x 10 = 60.
6 x 1 = 6.
4 x 10 = 40.
8 x 1 = 8.
100 + 60 + 6 = 166.
40 + 8 = 48.
166 – 48 = 118.