## 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

Answer:

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

Answer:

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

Answer:

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

Answer:

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?

Answer:

I have used more centimeter when measuring the lines above.

b. Write a sentence to explain why you used more of that unit.

Answer:

Centimeter have shorter length units than inches. So, more centimeter are used.

Question 6.

Draw lines with the measurements below.

a. 3 centimeters long

Answer:

b. 3 inches long

Answer:

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: ________

Answer:

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

Answer:

Explanation :

1 cm = 0.3937 in

9.6 cm = 9.6 × 0.3937 = 3.77 in.

Question 2.

____ cm _____in

Answer:

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

Answer:

Explanation :

1 cm = 0.3937 in

14.4 cm = 14.4 × 0.3937 =5.67 in.

Question 2.

____ cm _____in

Answer:

Explanation :

1 cm = 0.3937 in

9.6 cm = 9.6 × 0.3937 = 3.77 in.

Question 3.

____ cm _____in

Answer:

Explanation :

1 cm = 0.3937 in

7.3 cm = 7.3 × 0.3937 = 2.87 in.

Question 4.

____ cm _____in

Answer:

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.

Answer:

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

Answer:

Question 6.

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

Answer:

b. Draw a line that is 7 centimeters in length.

Answer:

Question 7.

Takeesha drew a line 9 centimeters long. Damani drew a line 4 inches long. Takeesha says her line is longer than Damani’s because 9 is greater than 4. Explain why Takeesha might be wrong.

Answer:

Question 8.

Draw a line that is 9 centimeters long and a line that is 4 inches long to prove that Takeesha is wrong.

Answer: