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## Engage NY Eureka Math 2nd Grade Module 4 Lesson 21 Answer Key

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### Eureka Math Grade 2 Module 4 Lesson 21 Problem Set Answer Key

Question 1.
Solve vertically. Draw chips on the place value chart and bundle, when needed.
a. 65 + 75 = ___140______ 65 + 75 = 140.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
6 x 10 = 60.
5 x 1 = 5.
60 + 5 = 65.
7 x 10 = 70.
5 x 1 = 5.
60 + 5 = 65.
70 + 5 = 75.
65 + 75 = 140. b. 84 + 29 = ___113______ 84 + 29 = 113.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
8 x 10 = 80.
4 x 1 = 4.
80 + 4 = 84.
2 x 10 = 20.
9 x 1 = 9.
20 + 9 = 29.
84 + 29 = 113 c. 91 + 19 = ____110______ 91 + 19 = 110.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
9 x 10 = 90.
1 x 1 = 1.
1 x 10 = 10.
9 x 1 = 9.
90 + 1 = 91.
10 + 9 = 19.
91 + 19 = 110. d. 163 + 27 = _____190____ 163 + 27 = 190.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
1 x 100 = 100.
6 x 10 = 60.
3 x 1 = 3.
100 + 60 + 3 = 163.
2 x 10 = 20.
7 x 1 = 7.
20 + 7 = 27.
163 + 27 = 190. Question 2.
Abby solved 99 + 99 on her place value chart and in vertical form, but she got an incorrect answer. Check Abby’s work, and correct it. What did Abby do correctly?
_________________________________________________________________
_________________________________________________________________

Abby solved the place value chart correctly.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
9 tens + 1 ten.
9 tens = 90.
1 ten = 10.
90 + 10 = 100.
8 tens = 80.
8 ones = 8.
100 + 80 + 8 = 188. What did Abby do incorrectly?
_________________________________________________________________
_________________________________________________________________

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
99 + 99 = 198.
but he did 188.
so he was wrong.

### Eureka Math Grade 2 Module 4 Lesson 21 Exit Ticket Answer Key

Solve vertically. Draw chips on the place value chart and bundle, when needed.

Question 1.
58 + 67 = ___125______ 58 + 67 = 125.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
5 x 10 = 50.
8 x 1 = 8.
6 x 10 = 60.
7 x 1 = 7.
50 + 8 = 58.
60 + 7 = 67.
58 + 67 = 125. Question 2.
43 + 89 = ___132______ 43 + 89 = 132.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
4 x 10 = 40.
3 x 1 = 3.
40 + 3 = 43.
8 x 10 = 80.
9 x 1 = 9.
80 + 9 = 89.
43 + 89 = 132. ### Eureka Math Grade 2 Module 4 Lesson 21 Homework Answer Key

Question 1.
Solve vertically. Draw chips on the place value chart and bundle, when needed.
a. 45 + 76 = ___121______ 45 + 76 = 121.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
4 x 10 = 40.
5 x 1 = 5.
7 x 10 = 70.
6 x 1 = 6.
40 + 5 = 45.
70 + 6 = 76.
45 + 76 = 121. b. 62 + 89 = ___151______ 62 + 89 = 151.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
6 x 10 = 60.
2 x 1 = 2.
8 x 10 = 80.
9 x 1 = 9.
60 + 2 = 62.
80 + 9 = 89.
62 + 89 = 151. c. 97 + 79 = __176________ 97 + 79 = 176.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
9 x 10 = 90.
7 x 1 = 7.
90 + 7 = 97.
7 x 10 = 70.
9 x 1 = 9.
70 + 9 = 79.
97 + 79 = 176. d. 127 + 78 = ____205_____ 127 + 78 = 205.

Explanation:
In the above-given question,
given that,
draw chips on the place value chart.
1 x 100 = 100.
2 x 10 = 20.
7 x 1 = 7.
7 x 10 = 70,
8 x 1 = 8.
100 + 20 + 7 = 127.
70 + 8 = 78.
127 + 78 = 205. Question 2.
The blue team scored 37 fewer points than the white team. The blue team scored 69 points.
a. How many points did the white team score?

The number of points did the white team score = 106.

Explanation:
In the above-given question,
given that,
The blue team scored 37 fewer points than the white team.
the blue team scored 69 points.
69 + 37 = 106.
so the number of points did the white team score = 106.

b. How many points did the blue and white teams score altogether?