Found a typo on page 108, did not find an errata for this book.

Remembering logarithms section. One of the examples is incorrect.

log₁₀2000 = 3.30103, because 10^3.30103 = 200.

should be:

log₁₀2000 = 3.30103, because 10^3.30103 = 2000.

-- Peter Lauterbach (email)