# Error propagation

Always the easy things we forget...
I know how errors propogate through multiplication or division when every term has an error, but how do I propagate errors in equations when only one term has an uncertainty? I want to say just multiply and divide the uncertainty value by the constants, i.e plug my value in the equation, then plug the uncertainty. This is the same as if I just found the % uncertainty, and multiplied the final product by that, correct? Is this the right way to go about this? And what if two (or more) terms have uncertainties? Would I find the uncertainty between those terms and then apply that % to the final number? Thanks.

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HallsofIvy