a. **Length**. Three of the most commonly used length relationships in the metric

system are:

1 kilometer (km)

=

1000 meters (m)

1 meter (m)

=

100 centimeters (cm) = 1000 millimeters (mm)

1 centimeter (cm)

=

10 millimeters (mm)

b. **Weight**. Two of the most commonly used weight relationships in the metric

system are:

1 kilogram (kg)

=

1000 grams (gm)

1 gram (gm)

=

1000 milligrams (mg)

1 microgram (mcg)

=

__1_

1000 milligram (mg)

c. **Volume**. Three of the most commonly used volume relationships in the

metric system are:

1 liter (l)

=

1000 milliliters (ml)

1 liter (l)

=

1000 cubic centimeters (cc)

1 milliliter (ml)

=

1 cubic centimeter (cc)

To convert a quantity in the metric system to a larger unit, we divide or move the

decimal point to the left. To convert to a smaller unit, we multiply or move the decimal

point to the right. Alternatively, we can use ratio and proportion as illustrated in the

following examples:

a. **Example 1**: Convert 0.3 mg to grams. (There are 1000 mg in 1 gram.)

IF

1000 mg

THEN

0.3 mg

1 gm

=

X gm

1000 X = 0.3 1

1000X = 0.3

1000

1000

X

= 0.0003 gm (answer)

MD0913

1-12

Integrated Publishing, Inc. |