What math formulas do you use when you consider a new property?

[Daniel Patterson]

I'm starting to get a general idea of how I should look for a property that would be good to purchase, renovate, then rent out. I'm a little lost on which formulas I should use when considering a property. Things like cap rate, and appreciation and depreciation rates. 

What I'm wondering is, what are the standard formulas that an experience investor would use when considering a new property. 

You can just list what you use, and I can do the rest of the research on the formulas, and how to use them myself. IF you would like to explain them though.. go right ahead. 

Thanks