Logarithms are a shortcut for exponents. There are patterns in logarithms that are fairly easy to understand. For example, the logarithm of 100 to base 10 is 2.

Revise what logarithms are and how to use the 'log' buttons on a scientific calculator as part of Higher Maths. ... Laws of logarithms and exponents Using a calculator. ... Evaluate \({\log _3}2\) ...