Converting Units of Time-Gr 4-Solved Examples

Solved Examples and Worksheet for Converting Units of Time

Q1How many minutes equals 18 hours?
A. 1350 minutes
B. 80 minutes
C. 1080 minutes
D. 12975 minutes

Solutions

Step: 1

1 hour = 60 minutes

Step: 2

18 hours = (18 × 60) minutes = 1080 minutes

[Multiply]

Step: 3

1080 minutes equal 18 hours.

Correct Answer is : 1080 minutes

Q2How many minutes make 540 seconds?

A. 19 minutes
B. 10 minutes
C. 60 minutes
D. 9 minutes

Solutions

Step: 1

The conversion is from smaller to larger unit, so divide.

Step: 2

60 seconds = 1 minute

[Conversion from second to minute.]

Step: 3

540 seconds = (54060) minutes

[Divide 540 seconds by 60 seconds, to convert into minutes.]

Step: 4

= 9 minutes

[Simplify]

Step: 5

So, 540 seconds equal 9 minutes.

Correct Answer is : 9 minutes

Q3How many minutes are there in 3 hours?
A. 180 minutes
B. 190 minutes
C. 200 minutes
D. 170 minutes

Solutions

Step: 1

The conversion is from larger to smaller unit, so multiply.

Step: 2

1 hour = 60 minutes

[Conversion from hour to minutes.]

Step: 3

3 hours = (3 × 1) hours = (3 × 60) minutes

[Substitute 1 hour = 60 minutes.]

Step: 4

= 180 minutes

[Multiply.]

Step: 5

So, 3 hours = 180 minutes.

Correct Answer is : 180 minutes

Q4How many hours are there in 4 days?
A. 96 hours
B. 48 hours
C. 106 hours
D. 12 hours

Solutions

Step: 1

The conversion is from larger to smaller unit, so multiply.

Step: 2

1 day = 24 hours

[Conversion from day to hours.]

Step: 3

4 days = (4 × 1) days = (4 × 24) hours

[Since 1 day = 24 hours.]

Step: 4

= 96 hours

[Multiply.]

Step: 5

So, there are 96 hours in 4 days.

Correct Answer is : 96 hours

Q5How many hours equal 240 minutes?
A. 6 hours
B. 4 hours
C. 7 hours
D. 5 hours

Solutions

Step: 1

The conversion is from smaller to larger unit, so divide.

Step: 2

60 minutes = 1 hour

[Conversion from minutes to hour.]

Step: 3

240 minutes = (24060) hours

[Divide 240 minutes by 60 minutes, to convert into hours.]

Step: 4

= 4 hours

[Simplify]

Step: 5

So, 240 minutes equal 4 hours.

Correct Answer is : 4 hours

Q6Is the statement, "62 minutes < 1 hour", correct or not?

A. No
B. Yes

Solutions

Step: 1

1 hour equals 60 minutes.

Step: 2

62 minutes is greater than 1 hour, and not less than 1 hour.

Step: 3

So, the statement is incorrect.

Correct Answer is : No

Q7Joe stated that "175 minutes < 3 hours". Was his statement true?

A. Yes
B. No

Solutions

Step: 1

The conversion is from larger to smaller unit, so multiply.

Step: 2

1 hour = 60 minutes

[Conversion from hour to minutes.]

Step: 3

3 hours = (3 × 1) hours = (3 × 60) minutes

[Since 1 hour = 60 minutes.]

Step: 4

= 180 minutes

[Multiply]

Step: 5

175 minutes are less than 180 minutes.

Step: 6

So, Joe's statement was true.

Correct Answer is : Yes

Q8Olga was attending a class and her teacher asked her to say whether 480 seconds or 7 minutes is more. If Olga answered the question correctly, what was her answer?

A. 7 minutes
B. 480 seconds
C. Both are equal

Solutions

Step: 1

Lets convert the 7 minutes to seconds. The conversion would be from a larger to smaller unit, so multiply.

Step: 2

1 minute = 60 seconds

[Conversion from minutes to seconds.]

Step: 3

7 minutes = (7 × 1) minutes = (7 × 60) seconds

[Since 1 minute = 60 seconds.]

Step: 4

= 420 seconds

[Multiply]

Step: 5

480 seconds are more than 420 seconds, which is the same as 7 minutes.

Step: 6

So, Olga's answer was 480 seconds.

Correct Answer is : 480 seconds

Q9How many weeks are there in 28 days?
A. 4 weeks
B. 6 weeks 5 days
C. 7 weeks
D. 28 weeks

Solutions

Step: 1

The conversion is from smaller to larger unit, so divide.

Step: 2

7 days = 1 week

[Conversion from days to week.]

Step: 3

28 days = (287) weeks

[Divide 28 days by 7 days, to convert into weeks.]

Step: 4

= 4 weeks

[Simplify]

Step: 5

So, 28 days are 4 weeks.

Correct Answer is : 4 weeks

Q10How many hours are there in 495 minutes?

A. 825 hours
B. 925 hours
C. 814 hours
D. 914 hours

Solutions

Step: 1

The conversion is from smaller to larger unit, so divide.

Step: 2

60 minutes = 1 hour

[Conversion from minutes to hour.]

Step: 3

495 minutes is not exactly divisible by 60 and so the nearest multiple of 60 is 480.

Step: 4

480 minutes = (48060) hours

[Divide 480 minutes by 60 minutes, to convert into hours.]

Step: 5

= 8 hours

[Simplify]

Step: 6

495 - 480 = 15 minutes, which is 14 of an hour.

Step: 7

So, 495 minutes equals 814 hours.

Correct Answer is : 814 hours

Q11Which is greater, 240 seconds or 40 minutes?

A. 40 minutes
B. 240 seconds
C. Both are equal
D. Cannot be compared

Solutions

Step: 1

1 minute = 60 seconds.

Step: 2

40 minutes = 40 × 1 minute = 40 × 60 seconds = 2400 seconds.

Step: 3

2400 seconds > 240 seconds

Step: 4

So, 40 minutes is greater than 240 seconds.

Correct Answer is : 40 minutes

Q12Edward's flight was delayed by 300 minutes. How many hours did Edward have to wait?

A. 6 hours
B. 5 hours
C. 7 hours
D. 8 hours

Solutions

Step: 1

The conversion is from smaller to larger unit, so divide.

Step: 2

60 minutes = 1 hour.

[Conversion from minutes to hours.]

Step: 3

300 minutes = (30060) hours.

[Divide 300 minutes by 60 minutes, to convert into hours.]

Step: 4

= 5 hours.

[Simplify.]

Step: 5

So, 300 minutes equal 5 hours.

Step: 6

So, Edward had to wait for 5 hours to catch the flight.

Correct Answer is : 5 hours

Q13Joe and his friends spent 812 hours at the amusement park. How many minutes did they spend at the amusement park?
A. 480 minutes
B. 500 minutes
C. 510 minutes
D. 255 minutes

Solutions

Step: 1

The conversion is from larger to smaller unit, so multiply.

Step: 2

1 hour = 60 minutes.

[Conversion from hour to minutes.]

Step: 3

812hours = 8 hours + 12hour.

Step: 4

8 hours = (8 × 1) hour = (8 × 60) minutes.

[Since 1 hour = 60 minutes.]

Step: 5

= 480 minutes.

[Multiply.]

Step: 6

12 of an hour = (602) minutes = 30 minutes.

[Simplify.]

Step: 7

812 hours = 480 minutes + 30 minutes = 510 minutes.

[Add.]

Step: 8

So, Joe and his friends spent 510 minutes at the amusement park.

[Add.]

Correct Answer is : 510 minutes

Q14In a soccer match, the first goal was made 2 minutes after starting the game. In how many seconds was the first goal made?

A. 120
B. 115
C. 135
D. 125

Solutions

Step: 1

60 seconds = 1 minute

Step: 2

2 minutes = 2 × 1 minute = 2 × 60 seconds

Step: 3

= 120 seconds

Step: 4

120 seconds = 2 minutes.

Step: 5

So, the first goal was made 120 seconds after starting the game.

Correct Answer is : 120

Q15Gina spent 4 hours shopping at the mall. How many minutes did she spend shopping?

A. 240
B. 260
C. 250
D. 230

Solutions

Step: 1

1 hour = 60 minutes.

Step: 2

4 hours = 4 × 1 hour = 4 × 60 minutes = 240 minutes.

Step: 3

So, 4 hours = 240 minutes.

Step: 4

So, Gina spent 240 minutes shopping at the mall.

Correct Answer is : 240

Solved Examples and Worksheet for Converting Units of Time

Related Worksheet

Related Topic

HighSchool Math