Video Definition 5--Primes and Composites--Divisibility Rule for 11

Topic

Prime and Composite Numbers

Description

Divisibility by 11: To test if a number is divisible by 11, add digits in alternate places and find the difference. If the difference is divisible by 11, then the number is divisible. For example, 9042: (9 + 4) - (0 + 2) = 11. This rule provides a specific method for divisibility testing, reinforcing the patterns within numbers that connect to primes and composites.

The mathematics behind this topic provides a foundation for understanding how numbers interact with one another. By exploring the patterns and properties of prime and composite numbers, students can develop critical thinking and problem-solving skills.

Teacher's Script: Let’s explore an important concept that involves classifying numbers based on their factors. This concept will help us understand how numbers are built and how they can be broken down into their basic building blocks. Pay attention to the visuals and explanations to see how these ideas connect to everyday math!

For a complete collection of videos related to Prime and Composite Numbers click on this link: Math Video Definitions: Primes and Composites Collection.