haleret/khan-exercises — comment on commit 72c1dd0ec1ffec55dac60df9b1a74d23bed3bf5c
File: exercises/adding_and_subtracting_scientific_notation.html line 36
By smenks13:

Just to make it a little clearer what we're doing here, why don't you add an extra set of parentheses around the mantissa times the first power of 10, so that it would look like this:

= ( (3.5 * 10^2) * 10^3 ) + ...