haleret/khan-exercises — comment on commit 72c1dd0ec1ffec55dac60df9b1a74d23bed3bf5c
File: exercises/adding_and_subtracting_scientific_notation.html line 33
By smenks13:

How about,
```

Before we can add, we need to make sure both numbers are being multiplied by the same powers of 10.

Let's change the first number so that it's being multiplied by 10^(second number's exponent).

```