Yup, it’s a skill you need. You need it now for fraction-to-decimal conversion, and you need it later for polynomial division (it sounds scary, but it’s not – if you know long division, that is).
Your homework for tonight is to make sure you know how to perform long division on paper (without using a calculator), and then to divide 3 by 7 (find the repeating sequence of decimals – you can check this with a calculator when you’re done).
Never learned it before? Need to brush up? Here are a couple of videos to help you:
A fun one to help remember the steps:
Last, here’s an example () to help you: