1. Metric Conversions

2. A) The test B) Fruit punch C) Water D) Test score A student wants to test if drinking fruit punch has an affect on her grade. She sets up a experiment in which she drinks fruit punch before a test and another experiment in which she drinks her normal glass of water before a test. What is her independent variable?

3. A) The test B) Fruit punch C) Water D) Test score A student wants to test if drinking fruit punch has an affect on her grade. She sets up a experiment in which she drinks fruit punch before a test and another experiment in which she drinks her normal glass of water before a test. What is her dependent variable?

4. Which of the following units are used with the metric system? A) Feet B) Centimeters C) Inches D) Yards

5. Choose all units that are used with the metric system A) Kilometers B) Mile C) Inches D) Gallon E) Ounces F) Liters

6. Why use conversions?  Need to convert from one measurement to a more “workable” measurement  Usually original number is too BIG or too small 53,498 mm 0.0098 km

7. How to use conversions…  Brainstorm 3 things you could measure with the following units  Meters  Liters  Grams

8. Stair Step Kilo- Hecto- Deka- base units Deci- Centi- Milli- Grams, liters,meters

9. Converting: 53,498 mm = ? m  Starting on the mm step, its 3 steps to m (basic unit)  Move the decimal 3 places to the left 53,498

10. Converting: 0.0098 km = ? m  How many steps is it from km → m?  Which way do you move? 0.0098

11. Metric Conversions Kilo- Hecto- Deka- base units Deci- Centi- Milli- Grams, liters,meters Each move to the right = multiplying by 10 Each move to the left = dividing by 10

12. Convert the following number to grams. 14 kg A) 140 g B) 0.014 g C) 14,000 g D) 1,400 g

13. Convert the following number to kilometers. 56 m A) 56,000,000 km B) 56,000 km C) 0.00000056 km D) 0.056 km

14. Convert the following number to liters. 34 mL A) 3,400 L B) 3,400,000 L C) 0.00034 L D) 0.034 L

15. Select the units that represent kiloliter A) kg B) L C) km D) kL

16. Select the units that represent decimeter A) dm B) dkm C) cm D) mm

17. Convert the following number to mm. 30 m A) 30,000 mm B) 0.03 mm C) 300 mm D) 0.00003 mm

18. What sign should be used? 56 cm 6 m A) < B) > C) =

19. What sign should be used? 1,500 mL 1.5 L A) < B) > C) =

20. Scientific Notations  Short hand way writing LARGE or extremely small numbers Examples of scientific notation 3.8 x 10 8 9.1 x 10 3 6.7 x 10 -6

21.  The little number means how many times to move the decimal point  The +/- sign indicates the direction to move the decimal point (left or right) 3.8 x 10 8 =380,000,000 Try these 9.1 x 10 3 = 6.7 x 10 -6 = Scientific Notations

22. Multiplying and Dividing w/Scientific Notation  Multiply = add exponents  Divide = subtract exponents (2.0 x 10 9 ) x (4.0 x 10 3 ) = ????

23. Scientific Notation Practice 1. Write out 4.8 x 10 -5 2. Which is bigger? (9.9 x 10 3 ) or (2.4 x 10 7 ) 3. Write in scientific notation 0.000056 4. Divide (5.0 x 10 6 ) by (2.0 x 10 2 ) Most excellent!!