What is a digit dividend?

A digit is a number or numeral. A dividend is a number to be divided. A dividend is divided by a divisor to yield a quotient. A digit dividend is a single digit number that is being divided some other (non-specified) number. The Word single is assumed to be there. It could be written like this: A (single) digit dividend is a single digit number that is being divided by another number. In mathematics, there are 1-digit dividends, 2-digit dividends, etc.