Question

Which is the best estimate for (8.9 x 10^8)/(3.3 x 10^4) written in scientific notation?

Answer 1

3*10^4

Explanation:

8.9/3.3 is about 3. 10^8/10^4 is 10^4.

Thus, the answer is about 3*10^4.

Answer 2

Answer: C: 3 X 10^4

Explanation:

Move the decimal so there is one non-zero digit to the left decimal. The number of decimal places you move will be the exponent on the 10. The sign of the exponent will depend on the direction you are moving the decimal. 2.69 (line over .69), therefore, round you get 3. = 3 x 10^4