Thing to keep in mind is that states set the course distribution requirements for all degrees awarded from accredited colleges/universities.
As such the requirements for a BofS degree may (and most always does) contain math and science requirements some may feel are excess to nursing.
For instance here in NYS you almost cannot get around taking a 100 ( and maybe 200) level chemistry course, statistics, and college level algebra type course (usually finite math) as part of getting any bachelor of science degree, the state via board of Regents mandates the requirements.
Nursing math (med dosage calculations) requires really nothing beyond first year high school algebra, and for some maybe not even then. While a bulk of the math is nothing more than working with fractions, decimals, division, multiplication, etc... you do need to know how to "solve for X"; that is word problems. Physician drug orders are really just that; a math word problem. On one side you have what is order, on the other what you've got (how the medication in question is dispensed). Your job is to turn the thing into an equation and come up with a correct answer.
In the days before "dimensional analysis" and widely accepted use of calculators probably many more students failed out of programs because they fluked med dose calc. Even more so when you had instructors who insisted on the use of *their* provided formulas only and you had to show all work. Didn't matter if the answer was correct, the fact you didn't use the "right" formula earned you a "incorrect" for the question. This was sad because many student nurses like anyone else often were wired differently for math. Left to their own they could get correct answers, but when forced to follow the "script" things just didn't make sense. Those of us who went to primary and secondary school say before the 1980's or 1990's are likely aware of this. Happily now the focus from first grade on is results, not sticking to the approved formula.
As for nursing math it really matters not which formula you use, long as you can consistently reach the correct "answer". Accuracy is what hospitals/facilities want. Happily once you graduate, licensed and working there are calculators, tablets, computers, phones, or even just pen and paper you can use to do the sums.