What is 10 to the power of negative 3?

10 to the power of negative 3, written as 10^-3, equals 0.001.

When we raise a number to a negative exponent, it means we are taking the reciprocal of that number raised to the positive exponent. In simpler terms, 10^-3 can be rewritten as 1/(10³). Since 10³ equals 1000, we have:

10^-3 = 1/(10³) = 1/1000 = 0.001

This concept is fundamental in mathematics and helps in understanding how to work with exponents, especially when they are negative.