Logarithms are basically inverse functions to exponential functions. How to explain what a logarithm is? Well, let’s give it a shot. The number y can equal to log(x) only if 10y = x.
So for example, the equation log10 = 1, because 101 is equal to 10. The equation log0.0001 = -4, because 10-4 is equal to 0.0001. I think you’re starting to get it. As for numbers such as 6, 78, and 0.376, then you’re looking at something requiring your calculator and some estimation.
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