The term numbers is c. 1300, "sum, aggregate of a collection," from Anglo-French noumbre, Old French nombre and directly from Latin numerus "a number, quantity." As a business person it is important to know your numbers. What numbers are important for business success? Revenue, margins, velocity, and return on assets are important numbers to know without the need for a teleprompter or speech writer. Total inventory and cash flow are also important to business success. Executing on a business plan will get the numbers needed to be successful.