Greatest Common Factor #2

These multiples share a few factors, but which one is the greatest? Scholars list the factors for various number pairs, first just indicating common factors. Next, they do the same but write down the greatest common factor. Finally,...

In this math worksheet, students learn to find common factors and common multiples for sets of numbers. First students circle the common factors they see in the examples given. Then students list the factors and multiples for each number...

Learners examine the concept of finding the greatest common factor. They complete number of activities as they practice identifying prime and composite numbers. Pupils apply rules of divisibility and find the greatest common factor while...

Prepare your classes for future work by reinforcing multiples and finding least common multiples. Learners see how to identify the least common multiple of a set of numbers. The instructor shows examples including a set of two and a set...

Assist your students in understanding how to add fractions with like denominators by showing them this presentation. Sal adds 3/15 to 7/15 and then simplifies his answer. He uses drawings and multiple colors to show the actual process.

If your class has watched the Khan Academy video on recognizing divisibility, they will have a good foundation for this video on finding factors. Sal demonstrates how to find factors of a number by using the divisibility rules and...

When one method isn't enough to teach GCF, try two! This interactive webpage introduces factors and the prime factor tree to find the greatest common factor of two numbers. After the lesson, have learners click to try the two examples...

Using the numbers 225 and 270, the narrator explains how to find the greatest common factor and the least common multiple. This presentation could be used in conjunction with other videos in a series exploring how to identify prime...

Two students have a conversation about the least common multiple (LCM) and greatest common factor (GCF). They briefly describe and give examples of how to find both the LCM and GCF. Note: The dialogue may be difficult to understand,...

A common multiple is exactly what it says it is: a multiple that two or more numbers have in common. So then a least common multiple would be the smallest common multiple that two or more numbers have in common. Watch this video to see...