# Whole Numbers and Closure: Multiplication

Math Properties

## Definition

The closure property for multiplication of whole numbers states that the product of any two whole numbers is always another whole number.

## Description

The closure property for multiplication of whole numbers is a fundamental concept in mathematics that demonstrates the consistency and completeness of the whole number system. This property ensures that when we multiply any two whole numbers, the result is always another whole number, keeping us within the same number system.

Understanding this property is crucial for students as they develop their skills in arithmetic and algebra. It provides a logical foundation for more complex operations and helps in solving real-world problems involving whole numbers, such as in area calculations, probability, or scaling in various applications.

Algebraically, we can express this property as: For any whole numbers a and b, a × b = c, where c is also a whole number. This algebraic representation helps students transition to more advanced mathematical concepts and abstract thinking, preparing them for algebra and calculus.

Teacher's Script: "Let's multiply two whole numbers: 4 and 6. We get: 4 × 6 = 24. Notice how our result is still a whole number? Now, let's try 5 and 0: 5 × 0 = 0. Again, we get a whole number! Can you think of any two whole numbers that, when multiplied, don't give you another whole number? Try different combinations and see what you discover!"

For a complete collection of terms related to the Closure Property click on this link: Closure Property Collection.

Common Core Standards CCSS.MATH.CONTENT.HSN.RN.B.3, CCSS.MATH.CONTENT.HSN.CN.A.2 9 - 12 Algebra     • The Language of Math         • Numerical Expressions 2021 Closure Property