Number Limits, Overflow, and roundoff (Khan Academy) - AP Computer Science Principles 

Today's video discusses the difference between overflow errors and roundoff errors. Essentially, they are the same phenomenon on opposite sides of the decimal point. A number that is too large to be represented results in an overflow error. A number that has too many digits AFTER the decimal point can result in a roundoff error.
You can find this exercise set here:
www.khanacadem...