Question

The expression 3.14 x 103 is scientific notation for which of the following values?

314
3,140
31,400
314,000

Answer 1

`3.14*10^3=3.14*1000=3,140`

Answer 2

3140

B is the correct option.

Explanation:

The expression in scientific notation is given by
`3.14*10^3`

We can simplify
`10^3` as

`10^3\\=10*10*10\\\\=1000`

Therefore, the expression becomes

`3.14*1000`

On multiplying, we get

`3140`

B is the correct option.