## Engage NY Eureka Math 2nd Grade Module 7 Lesson 18 Answer Key

### Eureka Math Grade 2 Module 7 Lesson 18 Problem Set Answer Key

Measure the lines in inches and centimeters. Round the measurements to the nearest inch or centimeter.

Question 1.

____ cm      _____in

12.3 cm  4.84 in
Rounding to the nearest inches and centimeter
12 cm     5 in.
Explanation:
Used ruler to measure the line. Ruler with cm and inch reading.
1 cm = 0.3937 in
12.3 cm = 12.3 × 0.3937 = 4.84 in.
measuring  inches is bit difficult than measuring centimeters.

Question 2.

____ cm      _____in

10.2 cm      4.01 in
Rounding to the nearest inches and centimeter
10 cm    4 in
Explanation:
Used ruler to measure the line. Ruler with cm and inch reading.
1 cm = 0.3937 in
10.2 cm = 10.2 × 0.3937 = 4.01 in.
measuring  inches is bit difficult than measuring centimeters.

Question 3.

____ cm     _____in
14.4 cm     5.66 in
Rounding to the nearest inches and centimeter
14 cm   6 in
Explanation:
Used ruler to measure the line. Ruler with cm and inch reading.
1 cm = 0.3937 in
14.4 cm = 14.4 × 0.3937 = 5.66 in.
measuring  inches is bit difficult than measuring centimeters.

Question 4.

____ cm     _____in

7.5 cm    2.95 in
Rounding to the nearest inches and centimeter
7 cm    3 in
Explanation:
Used ruler to measure the line. Ruler with cm and inch reading.
1 cm = 0.3937 in
7.5 cm = 7.5 × 0.3937 = 2.95 in.
measuring  inches is bit difficult than measuring centimeters.

Question 5.
a. Did you use more inches or more centimeters when measuring the lines above?
I have used more centimeter when measuring the lines above.

b. Write a sentence to explain why you used more of that unit.
Centimeter have shorter length units than inches. So, more centimeter are used.

Question 6.
Draw lines with the measurements below.
a. 3 centimeters long

b. 3 inches long

Question 7.
Thomas and Chris both measured the crayon below but came up with different answers. Explain why both answers are correct.

Thomas: 8 cm
Chris:  3 in
Explaination: ________

Both the answers are correct because they have two different measurement units.
8 cm equal to 3.15 inches because 8 times of 0.3937 is equal to 3.15.
Chris Rounded 3.15 in  to the nearest 3 inch.

### Eureka Math Grade 2 Module 7 Lesson 18 Exit Ticket Answer Key

Measure the lines in inches and centimeters. Round the measurements to the nearest inch or centimeter.

Question 1.

____ cm     _____in

Explanation :
1 cm = 0.3937 in
9.6 cm = 9.6 × 0.3937 = 3.77 in.

Question 2.

____ cm    _____in

Explanation :
1 cm = 0.3937 in
14.4 cm = 14.4 × 0.3937 = 5.67 in.

### Eureka Math Grade 2 Module 7 Lesson 18 Homework Answer Key

Measure the lines in inches and centimeters. Round the measurements to the nearest inch or centimeter.

Question 1.

____ cm      _____in

Explanation :
1 cm = 0.3937 in
14.4 cm = 14.4 × 0.3937 =5.67 in.

Question 2.

____ cm     _____in

Explanation :
1 cm = 0.3937 in
9.6 cm = 9.6 × 0.3937 = 3.77 in.

Question 3.

____ cm      _____in

Explanation :
1 cm = 0.3937 in
7.3 cm = 7.3 × 0.3937 = 2.87 in.

Question 4.

____ cm      _____in

Explanation :
1 cm = 0.3937 in
12.1 cm = 12.1  × 0.3937 = 4.75 in.

Question 5.
a. Draw a line that is 5 centimeters in length.

b. Draw a line that is 5 inches in length.

Question 6.
a. Draw a line that is 7 inches in length.