How do you write 5.3 times 10^-3 in standard from?

Oct 17, 2015

You should get $0.0053$
Observe the ${10}^{-} 3$: it tells you that you have to "move" the dot $3$ places to the left ($-$ sign) using zeros to fill the gaps:
$5.3 \times {10}^{-} 3$
$0.53$ first movement;
$0.053$ second movement;
$0.0053$ third movement.