my favorite 1000-year old turtle is quite correct.
if you are in california, you won't be worrying so much about iv, but you will cover it (it really depends on the school and instructor.)
mostly, you will be using this formula (or a variation thereof):
-- x v = with d: dosage ordered, h: dosage on hand and v: volume.
you might look at this site to play around a bit:
or here for the "box" method of calculations
Quote from daytonite
math for medication administration involves up to the pre-algebra level or 8th grade math. you need to be able to do ratios and work with fractions (add, subtract, multiple and divide them). you also need to know measurements; that 1 cup = 8 ounces, etc.
there is a post on this thread that has links for help with medication calculation: