1. Metric Conversions

2. Base SI Units metergram Liter

3. meter gram Liter = 3 inches more than a yard =About a quart

4. Metric Prefixes Lets us measure items too large or small for the base units kilohecto deca Base deci centi milli One gram, meter, Liter, volt, joule, etc 10.1 1000 100.01.001

5. Memorize the prefixes! K h d m d c m

6. Converting K h d m d c m I need 2.5Lof acid, but I have only a 100 mL graduated cylinder. How many mL is 2.5L Well if 1 L = 1000mL, all I must do is multiply 2.5 x 1000 That means 2.5 L = 2500mL

7. Converting K h d m d c m If you are comfortable with math you can convert by multiplying or dividing by multiples of 10 It is VERY easy to get confused Here’s a little trick

8. Converting K h d m d c m 2.5 L = _______ mL base unit Liters is a base unit. It DOES NOT have a prefix in front of it, so in my list of prefixes, that would be located at the m in the center (m for middle or base unit)

9. Converting K h d m d c m 2.5 L = _______ mL Liters is a base unit, so in my list of prefixes, that would be the m in the center

10. Converting K h d m d c m Milliliters use the milli prefix – that’s the m on the right side

11. Converting K h d m d c m Milliliters use the milli prefix – that’s the m on the right side

12. Converting K h d m d c m 2.5 L = _______ mL I need to change the L to mL How many units will I move? That means I will start at the center and move units to the right.

13. Converting K h d m d c m

14. Converting K h d m d c m

15. Converting K h d m d c m

16. Converting K h d m d c m I had to move over 3 places to the right 2.5 L = _______ mL Now I just take my decimal point and move it 3 places to the right

17. 2.5 L = _______ mL

18. 2.52.5 I can’t leave empty spaces, so I’ll fill them with zeroes 25. 2500. 2.5 L = 2500 mL

19. Converting K h d m d c m Let’s try another one 1016cL = _______daL

20. Converting K h d m d c m 1016cL = _______daL I am starting with centi and moving to deca. That’s going to the left

21. Converting K h d m d c m 1016cL = _______daL

22. Converting K h d m d c m 1016cL = _______daL

23. Converting K h d m d c m 1016cL = _______daL I make 3 moves to the left

24. 1016 1016cL = 1.016daL

25. Metric conversions 4 steps 1) Write the prefixes in order (use the King Henry mnemonic) 2) Determine the direction 3) Count how many units you move 4) Move the decimal point