In a whole number division problem, the final undivided part that is less than the divisor and 'left over' after dividing.

• A. Quotient
• B. Remainder
• C. Dividend
• D. Factor

Answer: (B)

When you do division with whole numbers, you’re separating the dividend into as many full groups of the divisor as possible. The number of full groups you can form is the quotient, and what’s left over that can’t form another full group is the remainder. The remainder is always less than the divisor, which fits the description of the final undivided part left over after dividing. For example, 17 divided by 5 gives 3 full groups of 5, with a remainder of 2. So the leftover part is the remainder. The quotient would be the 3, the dividend is the 17, and a factor relates to multiplication, not the leftover after division.