I stumbled across this and thought it might be useful.
I was having a complete brain freeze on the decimal issue (moving it etc...) and fractions even though I took a basic math and finished algebra last fall (feels like a million years ago)
Anyway I was going into a panic b/c I start Chem in a week and I was looking over my book testing out the problems (dimensional analysis) and that was coming okay till I tried the long division! Then I fell apart thinking I've forgotten EVERYTHING I've ever learned!
Then I regained my senses (what's left of them) and found this quick link...exactly what I needed...I know it, I just needed it to click.
Hope this helps some others. Happy studying...I'm psyched and nervous at the same time...how is that possible?