Question

How do you express the number in standard notation `2.42 times 10^-4`?

Answer 1

0.000242

Explanation:

`10^-4 = 1/10000`
To multiply by `10_4` or divide by `1/10000` moves the decimal point three places to the left.

Moving the decimal place to the left moves it past the the 2 and past three more zeros.