Question

The average distance in kilometers between the sun and earth is 150,000,000. How is this number expressed in scientific notation

Answer 1

1.5 * 10^8

Explanation:

Find the number of digits.

There are nine digits, subtract one, so we raise 10 to the power of 8.

Now, check the digits until it's just a string of zeroes.

We have 15.

Raise the decimal point until there is just one digit above the decimal point.

We have 1.5.

Now, multiply the two.

1.5 * 10^8

Answer 2

The answer is going to be 150x10^7