This worksheet contains logarithms but DOES NOT contain natural logarithms (ln). It does contain evaluating logs of base 10 and other numbers including fractions, adding logs, subtracting logs, multiplying logs by a constant, the change of base rule, problems involving the Richter Scale, the Safety Index, pH, and decibels.
To see what type of real world problems are included please visit my blog on this topic at:
Answer key is included! 20 pages total