2. Metric Units The metric system uses standard units for length,mass, and capacity.  meter (m) - measures length and distance  gram (g) – measures mass  liter (L) – measures capacity, or volume

3. Metric Prefixes The metric system is easy to use because it is a base-ten system. This means that larger units are defined by multiplying by powers of 10. Smaller units are found by dividing by powers of 10.

4. Metric Prefixes KKilo (k)-means1,000 HHecto (h)-means100 DDeka (da)-means10 BBase unit1 DDeci (d)-means1/10 or 0.1 CCenti (c)-means1/100 or 0.01 MMilli (m)-means1/1000 or 0.001

5. Yotta-10 24 = 1 000 000 000 000 000 000 000 000 Zetta- 10 21 = 1 000 000 000 000 000 000 000 Exa- 10 18 =1 000 000 000 000 000 000 Peta- 10 15 = 1 000 000 000 000 000 Tera- 10 12 = 1 000 000 000 000 Giga- 10 9 = 1 000 000 000 Mega- 10 6 = 1 000 000 Kilo- 10 3 = 1 000 Base 10 0 = 1 Milli- 10 -3 = 0.001 Micro- 10 -6 =0.000 001 Nano- 10 -9 = 0.000 000 001 Pico- 10 -12 = 0.000 000 000 001 Femto- 10 -15 = 0.000 000 000 000 001 Atto- 10 -18 = 0.000 000 000 000 000 001 Zepto- 10 -21 = 0.000 000 000 000 000 000 001 Yocto- 10 -24 = 0.000 000 000 000 000 000 000 001 More Metric Prefixes

6. How long is a meter(m)? About 39.37 inches (a yard is 36 inches) 2 cocker spaniel dogs width of a front door

7. How long is a kilometer(km)?  1 kilometer (km) = 1,000 meters  And about the length of:  0.6 of a mile mile km  10 football fields

8. What is the length of a centimeter(cm)?  1 centimeter = 1/100 or 0.01 meter  And about the same as:  the thickness of a single crayon  the width of the head of a thumbtack  the width of your pinky finger

9. How long is a millimeter(mm )?  1 millimeter (mm) = 1/1000 or 0.001 meter  And about the same as:  the thickness of a dime  the tip of a ballpoint pen

10. Conversions Between Units King Henry died unexpectedly drinking - chocolate milk To convert to a smaller unit, multiply or move decimal to the right. To convert to a larger unit, divide or move decimal to the left.

11. Let’s Practice! kilo- hecto- deka- Unit deci- centi- milli- 5 m = ________ cm 2 steps to the right move decimal 2 places to the right 500

12. More Practice! kilo- hecto- deka- unit deci- centi- milli- 6.2 km = ________ m 3 steps to the right move decimal 3 places to the right 6,200

13. More Practice kilo- hecto- deka- unit deci- centi- milli- 9 cm = ________ m 2 steps to the left move decimal 2 places to the left 0.09

14. One More Time kilo- hecto- deka- unit deci- centi- milli- 52 mm = ________ m 3 steps to the left move decimal 3 places to the left 0.052

15. GRAMS

16. How much mass is equal to a gram? a single Smartie a U.S. banknote (any denomination) A brand new nickel is exactly 5 grams. The mass is about the same as:

17. How much mass is a kilogram?  1 kilogram = 1,000 grams  And about the same as:  2.2 pounds 1 kg 1 lb  a textbook  2 loaves of bread

18. What is the mass of a milligram?  1 milligram = 1/1000 or 0.001 gram  And about the same as:  a single grain of sand  a grain of salt

19. Conversions in Mass kilo- hecto- deka- unit deci- centi- milli- 8 mg = ________ g 3 steps to the left move decimal 3 places to the left 0.008

20. More Practice! kilo- hecto- deka- unit deci- centi- milli- 0.28 kg = ________ g 3 steps to the right move decimal 3 places to the right 280 More Practice!

21. LITERS

22. What is the capacity of a liter?  The capacity of a liter is about the same as:  1 quart 1 liter ≈ 1.06 quarts A bottle of soda is equal to 2 liters.

23. What is the capacity of a kiloliter(kL)?  1 kiloliter = 1,000 liters  1 kiloliter = 1 cubic meter  About the same as:  the capacity of this hot tub

24. What is the capacity of a milliliter(mL)?  1 milliliter = 1/1000 or 0.001 liter  1 milliliter = 1 cubic centimeter  1 teaspoon is the same as 5 mL

25. Conversions in Capacity kilo- hecto- deka- unit deci- centi- milli- 12.5 mL = ________ L 3 steps to the left move decimal 3 places to the left 0.0125

26. More Practice! kilo- hecto- deka- unit deci- centi- milli- 9.25 kL= ________ L 3 steps to the right move decimal 3 places to the right 9250 More Practice!

27. Mixed Practice kilo- hecto- deka- unit deci- centi- milli- 7.4 cm = _______ mm 250 mL = _______ L35 mm = ________cm 0.91 kg = _______ g5,400 m = _______km 0.482 kL = _______mL625 cm = ________m 74 0.253.5 9105.4 482,0006.25

28. That’s all!