Algorithm: a step-by-step solution to a problem.

• Difference: The amount left after one number is subtracted from another number.

• Distributive Property: The sum of two addends multiplied by a number equals the sum of the product of each addend and that number.

• Dividend: A number that is divided by another number.

• Divisor: A number by which another number is to be divided.

• Factor: When two or more integers are multiplied, each number is a factor of the product. “To factor” means to write the number or term as a product of its factors.

• Greatest Common Factor: The largest factor that two or more numbers have in common.

• Least Common Multiple: The smallest multiple (other than zero) that two or more numbers have in common.

• Measurement Model of Division: When we know the original amount and the size or measure of ONE part, we use measurement division to find the number of parts. Ex: 20 is how many groups of 4?

• Minuend: The number that is to be subtracted from.

• Multiple: The product of a given whole number and an integer.

• Quotient: A number that is the result of division.

• Partitive Model of Division: When we know the original amount and the number of parts, we use partitive division to find the size of each part. Ex: 20 is 4 groups of what unit?

• Reciprocal: Two numbers whose product is 1. The reciprocal of a fraction can be found by inverting that fraction (switching the denominator and numerator).

• Sum: The number you get by adding two or more numbers together.

• Subtrahend: The number that is to be subtracted.

• Product: A number that is the result of multiplication.