2. WARM UP CONVERTING UNITS: Convert the units. Round the Result to the nearest tenth. 1.60 eggs to dozens of eggs 2.2 years to months 3.168 days to weeks 4.1270 minutes to hours 5.100 yards to feet (1 yard = 3 feet) 6.2000 meters to kilometers (1 km = 1000 yards) 5 Minutes Remain

3. WARM UP CONVERTING UNITS: Convert the units. Round the Result to the nearest tenth. 1.60 eggs to dozens of eggs 2.2 years to months 3.168 days to weeks 4.1270 minutes to hours 5.100 yards to feet (1 yard = 3 feet) 6.2000 meters to kilometers (1 km = 1000 yards) 4

4. WARM UP CONVERTING UNITS: Convert the units. Round the Result to the nearest tenth. 1.60 eggs to dozens of eggs 2.2 years to months 3.168 days to weeks 4.1270 minutes to hours 5.100 yards to feet (1 yard = 3 feet) 6.2000 meters to kilometers (1 km = 1000 meters) 3

5. WARM UP CONVERTING UNITS: Convert the units. Round the Result to the nearest tenth. 1.60 eggs to dozens of eggs 2.2 years to months 3.168 days to weeks 4.1270 minutes to hours 5.100 yards to feet (1 yard = 3 feet) 6.2000 meters to kilometers (1 km = 1000 yards) 2

6. WARM UP CONVERTING UNITS: Convert the units. Round the Result to the nearest tenth. 1.60 eggs to dozens of eggs 2.2 years to months 3.168 days to weeks 4.1270 minutes to hours 5.100 yards to feet (1 yard = 3 feet) 6.2000 meters to kilometers (1 km = 1000 yards) 1

7. WARM UP CONVERTING UNITS: Convert the units. Round the Result to the nearest tenth. 1.60 eggs to dozens of eggs 2.2 years to months 3.168 days to weeks 4.1270 minutes to hours 5.100 yards to feet (1 yard = 3 feet) 6.2000 meters to kilometers (1 km = 1000 yards) 0

8. 3.9 Percents GOAL: Solve Percent Problems KEY WORDS: Percent Base Number

9. 3.9 Percents A percent is a ratio that compares a number to 100. You can write a percent as a fraction, as a decimal, or as a number followed by a percent symbol (%). For example, you can write 40 percent as 0.40, or 40%. 40 100

10. 3.9 Percents VERBAL MODEL Number compared to base = percent base number a = number compared to base Percent = p% = b = base number ALGEBRAIC MODEL a = b p 100 p

11. 3.9 Percents EXAMPLE 1: Number compared to Base is Unknown What is 30% of 70 feet? a = ( ) (70) a = 21 a = b p 100 30 100

12. 3.9 Percents EXAMPLE 2: Base Number is Unknown Fourteen dollars is 25% of what amount of money? Number compared to base = 14 Percent = 25% = = 14 = b (4)14 = bb = 56 a = b p 100 25 100 1 4 1 4

13. 3.9 Percents EXAMPLE 3: Percent is Unknown 135 is what percent of 27? Number compared to base = 135 Base number = 27 135 = (27) 500 = p 135 is 500% of 27. 500 = p 135 is 500% of 27. a = b p 100 p = p 135 27 5 = p 100 YOU ARE CERTIFIED!

14. 3.9 Percents YOUR TURN Page 186 #s 3-10 and 16 - 27