stargazer109

Thanks for the info. That is a relief, but for the time being, I have to make it through nursing school and just found out that all medication exams, at least in my school, now require 100% correct or you don't move on. That is alot of pressure!

I have been really frustrated with why schools are teaching 1gr=60mg, 15gr=1g. Mathematically they don't come out equal. Example: 5g=?gr. If you use 15gr=1g the answer comes out to be 75. If you use 1gr=60mg, the answer is 83.3. My teacher could not explain why this happens. I did some research and found that 65mg is more true to 1grain. But since the school is teaching 60mg I have found another work around that will be helpful. Instead of making the wrong choice, here is the best method to use when converting: Grams to Grains = multiply by 15 Grains to Grams = divide by 15 or you could think of it like, if you need to convert grams to grains or visa/versa, use the 15grains = 1gram Grains to Milligrams = multiply by 60 Milligrams to Grains = divide by 60 or when converting milligrams to grains or visa/versa, use the 1grain=60mg. I hope that this helps someone. I know it has ended my frustration!!

I had brought this problem up with my teacher and she had no answers. An example is 5g = ? gr. If you use the 15gr=1g method you get 75 grains, if you use the conversion method with 1gr=60mg you would get 83.3! Here is the best way to figure out the answer. When converting: Grams to Grains = multiply by 15 Grains to Grams = divide by 15 Grains to Milligrams = multiply by 60 Milligrams to Grains = divide by 60 So far, the answers have come out perfectly with this method. The big problem is that schools are teaching 60mg=1grain, but actually 1 grain = 64.8mg. That is why you are getting different answers. Hope this helps!