What is the term for the amount left over in a division when the dividend is not evenly divisible by the divisor?

The term that describes the amount left over in a division when the dividend is not evenly divisible by the divisor is "Remainder." When dividing one number (the dividend) by another (the divisor), the result can often be a whole number with a remainder. For instance, if you divide 10 by 3, the quotient is 3, but there is a remainder of 1, since 3 times 3 equals 9, and when you subtract that from 10, you get 1.

The quotient refers to the result of the division without considering any leftover amounts, so it accounts only for how many times the divisor can fit into the dividend. The dividend is the initial number being divided, and the divisor is the number by which the dividend is divided. In this context, understanding these definitions reinforces why the term "Remainder" accurately describes what is left after performing the division when it does not divide evenly.