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9-5. Time and Temperature. Course 1. Warm Up. Problem of the Day. Lesson Presentation. 9-5. Time and Temperature. Course 1. Warm Up Convert each measurement to feet and inches. 1. 95 in. 2. 128 in. Convert each measurement to meters. 3. 406 cm 4. 24,671 mm. 7 ft 11 in.

9-5

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9-5

Time and Temperature

Course 1

Warm Up

Problem of the Day

Lesson Presentation

9-5

Time and Temperature

Course 1

Warm Up

Convert each measurement to feet and inches.

1.95 in. 2. 128 in.

Convert each measurement to meters.

3. 406 cm 4. 24,671 mm

7 ft 11 in.

10 ft 8 in.

24.671 m

4.06 m

9-5

Time and Temperature

Course 1

Problem of the Day

The skateboard had rolled from the house to within 1.8 m of the street before Rick caught it. If the house is 16.9 m from the street, how far did the skateboard roll?

15.1 m

9-5

Time and Temperature

Course 1

Learn to find measurements of time and temperature.

9-5

Time and Temperature

Course 1

9-5

Time and Temperature

Course 1

Convert.

2 hr 5 min = _____ min

2 hours 5 minutes

Think: 1 hour = 60 minutes.

(2  60) minutes plus 5 minutes

125 minutes

2 hr 5 min = 125 min

9-5

Time and Temperature

1 4

195 min = 3 hr

Course 1

Convert.

195 min = _____ hr

1 hr 60 min

195 60

Think: 1 hour = 60 minutes.

=

195 min •

hr

Write as a mixed number.

9-5

Time and Temperature

Course 1

Convert.

3 hr = _____ s

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

60 min 1 hr

60 s 1 min

= 10,800 s

3 hr •

3 hours = 10,800 seconds

9-5

Time and Temperature

Course 1

Check It Out: Example 1A

Convert.

3 days 7 hr = _____ hr

3 days 7 hours

Think: 1 day = 24 hours.

(3  24) hours plus 7 hours

79 hours

3 days 7 hr = 79 hr

9-5

Time and Temperature

1 2

102 mo = 8 yr

Course 1

Check It Out: Example 1B

Convert.

102 mo = _____ yr

1 yr 12 mo

102 12

Think: 1 year = 12 months.

yr

=

102 mo •

Write as a mixed number.

9-5

Time and Temperature

Course 1

Check It Out: Example 1C

Convert.

2 days = _____ min

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

24 hr 1 day

60 min 1 hr

= 2,880 min

2 days •

2 days = 2,880 min

9-5

Time and Temperature

Course 1

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

9-5

Time and Temperature

Course 1

Additional Example 2A: Finding 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.

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

Arrival time: 12:10 P.M.

Shawn arrived at 12:10 P.M.

9-5

Time and Temperature

Course 1

Additional Example 2B: Finding Elapsed Time

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.

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

Begin time: 10:50 A.M.

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

9-5

Time and Temperature

Course 1

Check It Out: Example 2A

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.

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

Arrival time: 11:00 A.M.

Trent’s ferry arrived at 11:00 A.M.

9-5

Time and Temperature

Course 1

Check It Out: Example 2B

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.

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

Departure time: 1:40 P.M.

Franco’s train departed at 1:40 P.M.

9-5

Time and Temperature

Course 1

Celsius and Fahrenheit are the scales used to measure temperature. You can use these formulas to convert temperature.

9 5

5 9

9-5

Time and Temperature

Course 1

Estimate the temperature.

9 5

F = • C + 32

Use the formula.

9 5

Round to 2, and 32 to 30

Use the order of operations.

F = 2 • 40 + 30

F = 80 + 30

F = 110

9-5

Time and Temperature

Course 1

Estimate the temperature.

5 9

C = (F – 32)

Use the formula.

5 9

1 2

Round to , and 32 to 30

1 2

Use the order of operations.

C = (70 - 30)

1 2

C = (40)

C = 20

9-5

Time and Temperature

Course 1

Check It Out: Example 3

Estimate the temperature.

9 5

F = • C + 32

Use the formula.

9 5

Round to 2, and 32 to 30

Use the order of operations.

F = 2 • 12 + 30

F = 24 + 30

F = 54

9-5

Time and Temperature

Course 1

Check It Out: Example 3B

Estimate the temperature.

5 9

C = (F – 32)

Use the formula.

5 9

1 2

Round to , and 32 to 30

1 2

Use the order of operations.

C = (82 – 30)

1 2

C = (52)

C = 26

9-5

Time and Temperature

Course 1

Insert Lesson Title Here

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?

Estimate the temperature.

5. 20°C is about ____ °F 6. 66°F is about ____ °C

7

1,020

2

12:55 A.M.

70

18