Question

How do you write 159840 in scientific notation?

Answer 1

`1.5984*10^5`

Explanation:

The key realization is that when we write numbers in scientific notation, we want one non-zero digit before the decimal point.

In our example, we need the decimal to be after the `1`, so we must loop it `5` times to the left.

The `5` will be our power of `10`, and since we looped the decimal left, the exponent will be positive. We get

`1.5984*10^5`

Hope this helps!