1. Think Metric System

2. What is the Metric System?  The metric system is a group of units used to make any kind of measurement, such as length, temperature, time, or weight.

3. GO WITH METRIC  The metric system is so easy because it is set up in units of 10s.  Thus, to convert from one unit of length to another in metric all you have to do is multiply or divide by 10, 100, 1000, and so on. The basic unit of length is the meter which is represented by the abbreviation m. GO!

4.  Did you see how the line was divided?  Each section is a centimeter.  If a centimeter was divided into 10 sections each of those small sections would be a millimeter.

5. Here is some background on length in the metric system.  The meter which is about the length of a mans arm and can be divided into 10 segments each of which is called a "deci-meter".  Deci means one tenth.  Each of the decimeters is divided into 10 segments called "centi-meters".  There are 100 centimeters in a meter and centi just happens to mean one hundredth.  Next the centimeter is divided into 10 segments which are called "milli-meters".  Since there are 1000 millimeters in one meter, what do you think milli means?

6. Right, it does mean one thousandth. You are bright!

7. Since that was so easy let us go the other way.  When we have 10 meters side by side we have a "decameter".  Deca means 10.  Now we lay 10 decameters or 100 meters side by side we have a "hecto- meter".  Hecto means 100.  If you lay 10 hectometers or 1000 meters side by side you would have a "kilo-meter".

8. What does kilo mean?

9. You are right, it does mean 1000!

10. It is important to remember the order in size and the relationship of the units.

11. Prefixes of the Metric System ThousandsHundreds TensBasic Unit TenthsHundredthsThousands 10001001010.10.010.001 Kilo (k) Hecto (H) Deca (D) Meter Liter Gram deci (d) centi (c) milli (m) A way to remember the prefixes King Henry Died Monday Drinking Chocolate Milk

12. Here is another way of looking at order and size of the units.  1 meter = 10 decimeters = 100 centimeters = 1000 millimeters  1 kilometer = 10 hectometers = 100 decameters = 1000 meters

13. How many centimeters are in 80 millimeters?  You know that there are 0.1 centimeters in 1 millimeter or that there are 10 millimeters per one centimeter.  If we have 80 millimeters we have 8 centimeters.  All we did was divide 80 by 10 to get 8 centimeters. 80 millimeters x 1 centimeter = 8 centimeters 10 millimeters

14. When over you divide by 10 it is the same as moving the decimal over one place to the left. 80. ----> 8.0

15. This problem can also be solved using the metric staircase.  When you move from millimeters to centimeters you take one step up.  Since you are going up the staircase to the left you move the decimal to the left.  See the solution below 80. ----> 8.0 centimeters

16. The Stair-step Grams, liters,meters Kilo- Hecto- Deka-Base units Deci- Centi- Milli-

17. How Do I Use This?  The prefix of the first unit of measurement tells you on which step to start.  The prefix of the second unit of measurement tells you on which step to stop.  Find the step on which to start and count the number of steps it takes to get to the step where you stop.  If you went to the right (downstairs) the decimal in the first measurement moves that many places to the right.  If you went to the left (upstairs) then the decimal moves to the left. Fill any empty places with zeros.

18. 525,568 mm = ? m To make the conversion, we start on the milli- step and go three steps to the left to get to the meter step. Therefore, the decimal in 525568 mm moves three places to the left, becoming 525.568 m.

19. .00654 km = ? m We would start on the Kilo- step and move three steps to the right this time, ending on the meter (base unit) step. Therefore,.00654 km becomes 6.54 m.

20. Abbreviations LengthVolumeMass Millimeters - mm Milliliters - mLGrams - g Meters - m Liters - LKilograms - kg Kilometers - km Megagrams – Mg Metric ton - t