# How do you write 0.00004315 in scientific notation?

$4.315 \cdot {10}^{-} 5$
scientific notation format is always the first nonzero number followed by the . and the rest of the numbers times ten to some power. We can see that we will want $4.315 \cdot {10}^{x}$. In order to figure out what power we want we will count how many steps to get from where we want the decimal to be(4.315) to where it actually is (0.00004315), which in this case is to the left 5 (aka -5).