1-36. USING CONVERSIONS IN PROBLEMS
a. The main reason to convert units is to satisfy unit equality in a ratio and
For example: If a syrup contains 250 milligrams of tetracycline in each 5
milliliters of the syrup, how many grams of tetracycline are needed to make four liters of
When put in a proportion, the problem would be set up as follows:
IF 250 mg
Prior to cross-multiplying, the units must be the same:
Changes: 250 mg
d. Only when corresponding units are the same, may the cross-multiplication
1-37. CONVERSIONS WITHIN THE METRIC SYSTEM
a. To convert a quantity in the metric system to a larger denomination, move the
decimal to the left.
Smaller to Larger
Right to Left
To convert to a smaller denomination, move the decimal point to the right.
Larger to Smaller
Left to Right
In each rule, the L's are together.