This is how I learned them in middle school — just common logs, as an aid to doing roots, powers and multiplications of big numbers. We were told in an off-han

This is how I learned them in middle school — just common logs, as an aid to doing roots, powers and multiplications of big numbers. We were told in an off-hand way that logs could be to any base, even ‘e’, but not to worry about that for a few years.