Question

What is 30,000 expressed in scientific notation?

A. 3 x 10
B. 3 x 1000
C. 3 x 10
D. 1 x 10

Answer 1

First count how many zeros 30,000 has it has four. So you need to multiply it by something that has four digits. So B. 3 x 1000. Or expressed in scientific notation.

3 ×
`10^(4)`

Answer 2

The answer is b. It is the only choice that equals the right answer. You could also write this as 3 * 10^4, which is equivalent to b.