1. 9-5 Time and Temperature Course 1 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day

2. 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. Course 1 9-5 Time and Temperature 10 ft 8 in. 4.06 m 24.671 m

3. 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 Course 1 9-5 Time and Temperature

4. Learn to find measurements of time and temperature. Course 1 9-5 Time and Temperature

5. Time 1 year (yr) = 365 days 1 year = 12 months (mo) 1 year = 52 weeks 1 week = 7 days 1 day = 24 hours (hr) 1 hour = 60 minutes (min) 1 minute = 60 seconds (s) Course 1 9-5 Time and Temperature

6. 2 hours 5 minutes 125 minutes Think: 1 hour = 60 minutes. Course 1 9-5 Time and Temperature Additional Example 1A: Converting Time Convert. 2 hr 5 min = _____ min (2  60) minutes plus 5 minutes 2 hr 5 min = 125 min

7. Think: 1 hour = 60 minutes. Course 1 9-5 Time and Temperature Additional Example 1B: Converting Time Convert. 195 min = _____ hr 195 60 195 min 1 hr 60 min = 195 min = 3 hr 1414 Write as a mixed number. hr

8. Think: 1 hour = 60 minutes and 1 minute = 60 seconds. Course 1 9-5 Time and Temperature Additional Example 1C: Converting Time Convert. 3 hr = _____ s 60 s 1 min 3 hr 60 min 1 hr 3 hours = 10,800 seconds = 10,800 s

9. 3 days 7 hours 79 hours Think: 1 day = 24 hours. Course 1 9-5 Time and Temperature Check It Out: Example 1A Convert. 3 days 7 hr = _____ hr (3  24) hours plus 7 hours 3 days 7 hr = 79 hr

10. Think: 1 year = 12 months. Course 1 9-5 Time and Temperature Check It Out: Example 1B Convert. 102 mo = _____ yr 102 12 102 mo 1 yr 12 mo = 102 mo = 8 yr 1212 Write as a mixed number. yr

11. Think: 1 day = 24 hours and 1 hour = 60 minutes. Course 1 9-5 Time and Temperature Check It Out: Example 1C Convert. 2 days = _____ min 60 min 1 hr 2 days 24 hr 1 day 2 days = 2,880 min = 2,880 min

12. Course 1 9-5 Time and Temperature The time between the start of an activity and the end of an activity is called the elapsed time.

13. 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. Course 1 9-5 Time and Temperature 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. Shawn arrived at 12:10 P.M.

14. 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. Course 1 9-5 Time and Temperature 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. Ty began his trip at 10:50 A.M.

15. 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. Course 1 9-5 Time and Temperature 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. Trent’s ferry arrived at 11:00 A.M.

16. 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. Course 1 9-5 Time and Temperature 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. Franco’s train departed at 1:40 P.M.

17. Temperature Conversions To convert Celsius to Fahrenheit use F = C + 32. To convert Fahrenheit to Celsius use C = (F – 32). Course 1 9-5 Time and Temperature 9595 5959 Celsius and Fahrenheit are the scales used to measure temperature. You can use these formulas to convert temperature.

18. Round to 2, and 32 to 30 Use the formula. Course 1 9-5 Time and Temperature Additional Example 3A: Estimating Temperature Estimate the temperature. 40°C is about _____ °F. F = C + 32 F = 2 40 + 30 9595 Use the order of operations. 9595 F = 80 + 30 F = 110 40°C is about 110°F.

19. Round to, and 32 to 30 Use the formula. Course 1 9-5 Time and Temperature Additional Example 3B: Estimating Temperature Estimate the temperature. 70°F is about _____ °C. C = (F – 32) C = ( 70 - 30) 5959 Use the order of operations. 5959 C = (40) C = 20 70°F is about 20°C. 1212 1212 1212

20. Round to 2, and 32 to 30 Use the formula. Course 1 9-5 Time and Temperature Check It Out: Example 3 Estimate the temperature. 12°C is about _____ °F. F = C + 32 F = 2 12 + 30 9595 Use the order of operations. 9595 F = 24 + 30 F = 54 12°C is about 54°F.

21. Round to, and 32 to 30 Use the formula. Course 1 9-5 Time and Temperature Check It Out: Example 3B Estimate the temperature. 82°F is about _____ °C. C = (F – 32) C = (82 – 30) 5959 Use the order of operations. 5959 C = (52) C = 26 82°F is about 26°C. 1212 1212 1212

22. 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 Insert Lesson Title Here 2 12:55 A.M. Course 1 9-5 Time and Temperature 7018