1. Bell Ringer Simplify the following: 1. √30 * √60 2. √300 * 5√20 3. 6√20 + 3√10 – 5√20 – 10√10 4. Find the distance AND midpoint of the line segment with the endpoints (-6, -2) and (5, 6).

6. What are we doing today? SPI 4.4 Convert rates and measurements.

7. Conversion factors A CONVERSION FACTOR is the number you multiply or divide by to convert from one unit to another. In the metric system, milli- = 1/1,000 centi- = 1/100 kilo- = 1,000

8. Important Conversion Factors

9. Important Conversion Factors cont.

10. In the metric system, milli- = 1/1,000 centi- = 1/100 kilo- = 1,000

11. Important Conversion Factors cont.

12. An example of a problem: The mass of an object is 7.45 kg. What is the mass of the object in grams? We’ll use DIMENSIONAL ANALYSIS to solve these problems.

13. The mass of an object is 7.45 kg. What is the mass of the object in grams?

14. Pairs Check Person 1: How many liters of water are in 35 mL? Person 2: How many mL of water are in 2.3 L?

15. Another Pairs Check Person 1: The road between two towns is 2.44 miles long. How long is the road in yards? Person 2: The road between two towns is 5,922 yards long. How long is the road in miles?

16. Another example: A truck is traveling at 55 miles per hour. How many feet per second is the truck traveling?

17. Pairs Check Person 1: A truck is traveling at 90 miles per hour. How many feet per second is the truck traveling? Person 2: A truck is traveling at 20 miles per hour. How many feet per second is the truck traveling?

18. Dimensional Analysis Give the definition in your own words. Give examples.

19. ACTIVITY TIME!

20. U R the Teacher Teacher solves: A living room has 12 yards of carpeting. How many inches of carpeting is this?

21. Assignment Complete worksheet on whiteboard.