Question

Need help with this question?

Answer 1

1.23 * 10^-7

Explanation:

For decimals smaller than 1 usually something like 0.0000111 you count the decimal places backwards until you get to something greater than 0. So if you have 0.0022 the exponent would be 2.2 * 10^-3

For your problem 0.000000123

There's 6 zeros before you encounter the number thus your exponent is 1.23 * 10^-7

Here's a picture of how to do it!

Answer 2

if you multiply by powers of 10 then make the decimal point go right.