Question

To add or subtract numbers with the power of ten you need to make sure the exponents match before you do anything to the coefficients

Answer 1

nope it doesn't matter the exponents they don't have to match but you later have to add them and add that many zeros back as the exponents

Answer 2

is this a true or false question? If so, it's false. To add or subtract, the bases have to match, not the exponents.

Explanation: