Question

How do you convert 689 into scientific notation?

Answer 1

The number in standard scientific notation is `6.89 × 10^2`.

Explanation:

In scientific notation, numbers are written in the form `a × 10^b`, where `a` is the "pre-exponential" part and `10^b` is the "exponential part".

Your number in decimal form is `689`.

To get to "standard" scientific notation, we move the decimal point so there is only one non-zero digit in front of the decimal point.

So, `689` becomes `6.89`.

We moved the decimal point two places, so the exponent is `2`.

We moved the decimal point to the left, so the exponent is positive.

The exponential part is therefore `10^2`.

`689 = 6.89 × 10^2`