9-5 Time and Temperature Course 1 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day
Mar 15, 2016
9-5 Time and Temperature
Course 1
Warm UpWarm Up
Lesson PresentationLesson PresentationProblem of the DayProblem of the Day
Warm UpConvert 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.
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9-5 Time and Temperature
10 ft 8 in.
4.06 m 24.671 m
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
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9-5 Time and Temperature
Learn to find measurements of time and temperature.
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9-5 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)
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9-5 Time and Temperature
2 hours 5 minutes
125 minutes
Think: 1 hour = 60 minutes.
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9-5 Time and TemperatureAdditional Example 1A: Converting Time
Convert.2 hr 5 min = _____ min
(2 60) minutes plus 5 minutes
2 hr 5 min = 125 min
Think: 1 hour = 60 minutes.
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9-5 Time and TemperatureAdditional Example 1B: Converting Time
Convert.195 min = _____ hr
195 60195 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.
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9-5 Time and TemperatureAdditional Example 1C: Converting Time
Convert.3 hr = _____ s
60 s 1 min3 hr • 60 min
1 hr •
3 hours = 10,800 seconds
= 10,800 s
3 days 7 hours
79 hours
Think: 1 day = 24 hours.
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9-5 Time and TemperatureCheck It Out: Example 1A
Convert.3 days 7 hr = _____ hr
(3 24) hours plus 7 hours
3 days 7 hr = 79 hr
Think: 1 year = 12 months.
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9-5 Time and TemperatureCheck It Out: Example 1B
Convert.102 mo = _____ yr
102 12102 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.
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9-5 Time and TemperatureCheck It Out: Example 1C
Convert.2 days = _____ min
60 min 1 hr2 days • 24 hr
1 day •
2 days = 2,880 min
= 2,880 min
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9-5 Time and Temperature
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.
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9-5 Time and TemperatureAdditional 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.
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.
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9-5 Time and TemperatureAdditional 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.
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.
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9-5 Time and TemperatureCheck 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.
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.
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9-5 Time and TemperatureCheck 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.
Franco’s train departed at 1:40 P.M.
Temperature Conversions
To convert Celsius to Fahrenheituse F = C + 32.
To convert Fahrenheit to Celsiususe C = (F – 32).
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9-5 Time and Temperature
9 5
5 9
Celsius and Fahrenheit are the scales used to measure temperature. You can use these formulas to convert temperature.
Round to 2, and 32 to 30
Use the formula.
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9-5 Time and TemperatureAdditional Example 3A: Estimating Temperature
Estimate the temperature.40°C is about _____ °F.
F = • C + 32
F = 2 • 40 + 30
9 5
Use the order of operations.
9 5
F = 80 + 30F = 11040°C is about 110°F.
Round to , and 32 to 30Use the formula.
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9-5 Time and TemperatureAdditional Example 3B: Estimating Temperature
Estimate the temperature.70°F is about _____ °C.
C = (F – 32)
C = (70 - 30)
5 9
Use the order of operations.
5 9
C = (40)
C = 2070°F is about 20°C.
1 2
1 2
1 2
Round to 2, and 32 to 30
Use the formula.
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9-5 Time and TemperatureCheck It Out: Example 3
Estimate the temperature.12°C is about _____ °F.
F = • C + 32
F = 2 • 12 + 30
9 5
Use the order of operations.
9 5
F = 24 + 30F = 5412°C is about 54°F.
Round to , and 32 to 30Use the formula.
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9-5 Time and TemperatureCheck It Out: Example 3B
Estimate the temperature.82°F is about _____ °C.
C = (F – 32)
C = (82 – 30)
5 9
Use the order of operations.
5 9
C = (52)
C = 2682°F is about 26°C.
1 2
1 2
1 2
Lesson QuizConvert.
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
71,020
Insert Lesson Title Here
2
12:55 A.M.
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9-5 Time and Temperature
70 18