Study Set Content:
area of study that applies the basic principles of mathematics to the preparation and safe and effective use of pharmaceuticals
Pharmaceutical calculations
application of mathematics that require study
Pharmaceutical Calculations
A numerical representation of the relationship between two parts of the whole or between one part and the whole
Ratio
an expression of equality between two ratios
Proportion
compares values
Ratio
says how much one thing there is compared to another thing
Ratio
1:2 is aka
1 part to 2 parts
What words can you use in numerical ratios
per, in, or, of , to
Says that 2 ratios are equal
Proportion
is the expression of the equality of two ratios
Proportions
relative magnitude of two quantities
Ratio
The product of the extremes is equal to the product of the?
Means
proportion can be presented as
a:b=c:d, a:b::c:d or a/b=c/d
proportion can be presented as
a:b=c:d, a:b::c:d or a/b=c/d
A conversion method based on comparing a complete ratio with a missing component.
Ratio-Proportion Method
Rules of Ratio- proportion method
3 of the 4 amounts must be known, numerators must have the same unit of measure, denominators must have the same unit of measure
are used to describe IV solutions and topically applied to drugs
Percent strengths
The higher the % of dissolved substances? (what happens to the strength)
, the greater the strength
Are consecutive figures that express the value of a denominate number accurately enough for a given purpose
Significant Figures
rules for the significance of zero
Any zero between digits is significant, Initial zeros to the left of the first digit are never significant, they are there to show the location of the decimal point and give place value to the digits that follow, One or more final zeros to the right of the decimal point may be taken to be significant
