When you multiply decimals by integers (whole numbers), you can use everything you already know about multiplying multi-digit numbers. You can use written or mental methods to multiply decimals by ...

David H. Bailey does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

The way we multiply is something we take for granted, but at least we know why the method works: why, that is, we start from the right and why we carry over digits from one column to the next one on ...