Question 1180583: Evaluate the expression without using a calculator.
log10 1000
Answer by math_helper(2461)   (Show Source):
You can put this solution on YOUR website! A log() is just an exponent. It is the power that the base (10 in this case) needs to be raised to, to give you a number. That is, if log10(y) = x then 10^x = y.
So ask yourself: 10 raised to what power gives you 1000? That power is your answer.
Examples:
log10(10) = 1, because 10^1 = 10
log10(100) = 2, because 10^2 = 100
log10(50) = 1.69897, because 10^1.69897 = 50
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