You may think the hard work is done once you’ve negotiated a good price on a new car. But before you can leave, you’ll have to sign paperwork in the dealership’s finance and insurance (F&I) office.

Addition involves finding the total of two or more numbers or amounts. There are different things you can use to help you add. You can use number lines, place value charts and place value counters.

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. David Kindness is a Certified Public Accountant (CPA) and an expert in the fields of ...