what is 123,000,000 in scientific notaion?

Answer 1

The previous answers are correct. Do you know how to figure it out?

Put the decimal point after the first non-zero digit in the number. In this case, the decimal goes after the 1. Then count how many digits there are to the original location of the decimal point. In this number, the decimal point would be after the last zero if you could see it, but we don't place decimal points in whole numbers. So start counting digits from just after the 1 until the end: 2-3-0-0-0-0-0-0 = 8 places.

1.23 x 10^8

Notice that you don't have to say all the zeroes in scientific notation because they're only in the original number for place holders.

If you have to count to the left to get to the decimal place, just use a negative exponent.

Example: 0.00348 changed to scientific notation
First nonzero number is the 3.
Counting from just after the 3 to the original decimal point is 3 steps or 3 places.
0.00348 = 3.48 x 10^(-3)

Answer 2

1.23 x 10^8

Answer 3

1.23x10ee8