Eureka Math Grade 4 Module 7 Lesson 3 Answer Key

Engage NY Eureka Math 4th Grade Module 7 Lesson 3 Answer Key

Eureka Math Grade 4 Module 7 Lesson 3 Practice Sheet Answer Key

a.

The rule for converting minutes to seconds is ______________

Number of minutes x 60 = Number of seconds

b.

The rule for converting hours to minutes is ____________

Number of hours x 60 = Number of minutes.

c.

The rule for converting days to hours is ______________
Answer:

Number of days x 24 = Number of hours.

Eureka Math Grade 4 Module 7 Lesson 3 Problem Set Answer Key

Use RDW to solve Problems 1–2.
Question 1.
Courtney needs to leave the house by 8:00 a.m. If she wakes up at 6:00 a.m., how many minutes does she have to get ready? Use the number line to show your work.

Answer: 120 minutes

Explanation :

8 – 6 = 2 hours

1 hour = 60 minutes

2 hours = 2 x 60 = 120

So, Courtney have 120 minutes to get ready

Question 2.
Giuliana’s goal was to run a marathon in under 6 hours. What was her goal in minutes?
Answer: 360 minutes.

Explanation :

Number of minutes = Number of hours x 60

Number of hours = 6

So, 6 x 60 = 360

Therefore, Giuliana’s goal to rum a marathon in under 360 minutes.

Question 3.
Complete the following conversion tables and write the rule under each table.
a.

The rule for converting hours to minutes and minutes to seconds is ___________

To calculate number of minutes,

Number of hours x 60 = Number of minutes

b.

The rule for converting days to hours is ____________
Answer:

To calculate number of hours,

Number of days x 24 = Number of hours.

Question 4.
Solve.
a. 9 hours 30 minutes = __________ minutes
b. 7 minutes 45 seconds = _______ seconds
c. 9 days 20 hours = __________ hours
d. 22 minutes 27 seconds = ______ seconds
e. 13 days 19 hours = __________ hours
f. 23 hours 5 minutes = _______ minutes
Answer:

a. 9 hours 30 minutes = 570 minutes
b. 7 minutes 45 seconds = 465 seconds
c. 9 days 20 hours = 236 hours
d. 22 minutes 27 seconds = 1,347 seconds
e. 13 days 19 hours = 331 hours
f. 23 hours 5 minutes = 1,385 minutes

Question 5.
Explain how you solved Problem 4(f).
Answer:

Given, 23 hours 5 minutes.

1 hour = 60 minutes

Number of minutes = Number of hours x 60

So, 23 x 60 = 1380

and 1380 + 5 = 1385

Therefore, 23 hours 5 minutes = 1350 minutes.

Question 6.
How many seconds are in 14 minutes 43 seconds?
Answer:

Given,

14 minutes 43 seconds

1 minutes = 60 seconds

Number of seconds = Number of minutes x 60

14 x 60 = 840 seconds

And 840 + 43 = 883 seconds

Therefore, 14 minutes 43 seconds = 883 seconds.

Question 7.
How many hours are there in 4 weeks 3 days?
Answer:

Given,

4 weeks 3 days

1 week = 7 days

So, 7 x 4 = 28 days

So, 28 + 3 = 31 days

1 day = 24 hours

Number of hours = Number of days x 24

31 x 24 = 744 hours

Therefore, 4 weeks 3 days = 744 hours

Eureka Math Grade 4 Module 7 Lesson 3 Exit Ticket Answer Key

The astronauts from Apollo 17 completed 3 spacewalks while on the moon for a total duration of 22 hours 4 minutes. How many minutes did the astronauts walk in space?
Answer:

Given,

22 hours 4 minutes is the total duration

1 hour = 60 minutes

Number of minutes = Number of hours x 60

So, 22 x 60 = 1,320

1320 + 4 = 1324

Therefore, 22 hours 4 minutes = 1324 minutes

So, The time duration required for astronaut to walk in space = 1324 minutes.

Eureka Math Grade 4 Module 7 Lesson 3 Homework Answer Key

Use RDW to solve Problems 1–2.
Question 1.
Jeffrey practiced his drums from 4:00 p.m. until 7:00 p.m. How many minutes did he practice? Use the number line to show your work.

Answer: 180

Explanation :

7 – 4 = 3

1 hour = 60 minutes

Number of minutes = Number of hours x 60

3 x 60 = 180 minutes

Therefore, Jeffrey practiced his drums for 180 minutes.

Question 2.
Isla used her computer for 5 hours over the weekend. How many minutes did she spend on the computer?
Answer: 300 minutes

Explanation :

1 hour = 60 minutes

Number of minutes = Number of hours x 60

5 x 60 = 300

Therefore, Isla used her computer for 300 minutes

5 hours = 300 minutes.

Question 3.
Complete the following conversion tables and write the rule under each table.
a.

The rule for converting hours to minutes is ________________

Number of minutes = Number of hours x 60

b.

The rule for converting days to hours is _________________
Answer:

Number of hours = number of days  x  24

Question 4.
Solve.
a. 10 hours 30 minutes = ________ minutes
b. 6 minutes 15 seconds = ________ seconds
c. 4 days 20 hours = ________ hours
d. 3 minutes 45 seconds = ________ seconds
e. 23 days 21 hours = ________ hours
f. 17 hours 5 minutes = ________ minutes
Answer:

a. 10 hours 30 minutes = 630 minutes
b. 6 minutes 15 seconds = 375 seconds
c. 4 days 20 hours = 116 hours
d. 3 minutes 45 seconds = 225 seconds
e. 23 days 21 hours = 573 hours
f. 17 hours 5 minutes = 1,025 minutes

Question 5.
Explain how you solved Problem 4(f).
Answer:

17 hours 5 minutes

1 hour = 60 minutes

Number of minutes = Number of hours x 60

17 x 60 = 1020

So, 1020 + 5 = 1025

Therefore, 17 hours 5 minutes = 1025 minutes

Question 6.
It took a space shuttle 8 minutes 36 seconds to launch and reach outer space. How many seconds did it take?
Answer:

Given, 8 minutes 36 seconds

1 minute = 60 seconds

Number of seconds = Number of minutes x 60

8 x 60 = 480 seconds

So, 480 + 8 = 488 seconds

8 minutes 36 seconds = 488 seconds.

Question 7.
Apollo 16’s mission lasted just over 1 week 4 days. How many hours are there in 1 week 4 days?
Answer:

Given,

1 week 4 days

1 week = 7 days

So, 7 + 4 = 11

1 day = 24 hours

Number of hours = number of days x 24

So, 11 x 24 = 264 hours

Therefore, 1 week 4 days = 264 hours.