# How do you write 0.00065 in scientific notation?

$6.5 \times {10}^{-} 4$
Number $= 0.00065$
$= \frac{65}{100000} = \frac{6.5}{10000} = \frac{6.5}{10} ^ 4$
$= 6.5 \times {10}^{-} 4$