Time and TemperatureTime and Temperature

I can find measurements of time and temperature.

Time

1 year (yr) = 365 days1 year = 12 months (mo)1 year = 52 weeks1 week = 7 days

1 day = 24 hours (hr)1 hour = 60 minutes (min)1 minute = 60 seconds (s)

2 hours 5 minutes

125 minutes

Think: 1 hour = 60 minutes.

Let’s Try this one together:

Convert.

2 hr 5 min = _____ min

(2 60) minutes plus 5 minutes

2 hr 5 min = 125 min

Think: 1 hour = 60 minutes.

Now you try it:

Convert.

195 min = _____ hr

195 60

195 min • 1 hr 60 min

=

195 min = 3 hr1 4

Write as a mixed number.

hr

Think: 1 hour = 60 minutes and 1 minute = 60 seconds.

Let’s try another one:

Convert.

3 hr = _____ s

60 s 1 min

3 hr • 60 min 1 hr

•

3 hours = 10,800 seconds

= 10,800 s

3 days 7 hours

79 hours

Think: 1 day = 24 hours.

Let’s try to convert day to hours:

Convert.

3 days 7 hr = _____ hr

(3 24) hours plus 7 hours

3 days 7 hr = 79 hr

Think: 1 year = 12 months.

How about months to years?

Convert.

102 mo = _____ yr

102 12

102 mo • 1 yr 12 mo

=

102 mo = 8 yr1 2

Write as a mixed number.

yr

Think: 1 day = 24 hours and 1 hour = 60 minutes.

Let’s try days to minutes:

Convert.

2 days = _____ min

60 min 1 hr

2 days • 24 hr 1 day

•

2 days = 2,880 min

= 2,880 min

The time between the start of an activity and the end of an activity is called the elapsed time.

Arrival time: 12:10 P.M.

Think: 1 hour after 10:15 A.M. is 11:15 A.M. 55 minutes after that is 12:10 P.M.

Let’s review Elapsed Time:

Shawn was scheduled to arrive at 10:15 A.M. he was 1 hour and 55 minutes late. When did he arrive?

Scheduled time: 10:15 A.M.

Shawn arrived at 12:10 P.M.

Begin time: 10:50 A.M.

Think: 2 hours before 1:35 P.M. is 11:35 A.M. 45 minutes before that is 10:50 A.M.

Now you try it:

Ty met his friends at 1:35 P.M. He had traveled for 2 hours and 45 minutes. At what time did Ty begin his trip?

End time: 1:35 P.M.

Ty began his trip at 10:50 A.M.

Arrival time: 11:00 A.M.

Think: 1 hour after 9:45 A.M. is 10:45 A.M. 15 minutes after that is 11:00 A.M.

Let’s try another one:

Trent’s ferry was scheduled to arrive at 9:45 A.M. he was 1 hour and 15 minutes late. When did he arrive?

Scheduled time: 9:45 A.M.

Trent’s ferry arrived at 11:00 A.M.

Departure time: 1:40 P.M.

Think: 3 hours before 4:55 P.M. is 1:55 P.M. 15 minutes before that is 1:40 P.M.

Check It Out:

Franco’s train arrived at 4:55 P.M. He had traveled for 3 hours and 15 minutes. At what time did Franco’s train depart?

Arrival time: 4:55 P.M.

Franco’s train departed at 1:40 P.M.

Be A STAAR:

• At 8:00am the temperature was 50 degrees in Houston, then raised 5 degrees every hour after 10am until it was 4:00pm. What was the difference in temperature from the morning until 4:00pm when the students were released from school?

Lesson Quiz

Convert.

1. 17 min = _____ s 2. 49 days = _____ weeks

3. 336 hr = _____ weeks

4. Ray drove 3 hours and 10 minutes to visit

friends. He started his trip at 9:45 A.M. What was his

arrival time?

71,020

Insert Lesson Title Here

2

12:55 A.M.