# What is least common denominator mean?

## What is least common denominator mean?

The least common denominator is the smallest number of all the common multiples of the denominators when 2 or more fractions are given.

### What is an example of least common denominator?

List the multiples of both denominators. For example, 2/15 and 1/25. The multiples of 15 are 15, 30, 45, 60, 75, 90, 105, 120, 135, Thus, the least common denominator will be 150 and the fractions will be 20/150 and 6/150 (by taking LCM)

**How do you determine least common denominator?**

To find the least common denominator, list out the multiples of both denominators until you find the smallest multiple that is shared by both. Because 20 is the first shared multiple of 4 and 5, it must be the least common denominator for these two fractions.

**What is a LCM in math definition?**

Definition of least common multiple 1 : the smallest common multiple of two or more numbers. 2 : the common multiple of lowest degree of two or more polynomials.

## What is the definition of common denominator in math?

Definition of common denominator 1 : a common multiple of the denominators of a number of fractions. 2 : a common trait or theme.

### How do you find the LCM of a fraction examples?

Lets see this using example of 2/9 and 8/21.

- LCM of 9 and 21 = 63,
- Now multiply first fraction by 63/9 = 7. Multiply second fraction by 63/21 = 3.
- Now since both denominators are same, LCM of numerators 14 and 24 = 168.
- Hence LCM of 2/9 and 6/21 is (168/63) After simplification 168/63 = 8/3.

**How do you teach common denominators?**

4 Ways to Teach Students to Make Common Denominators

- Use Manipulatives to Find Equivalent Fractions. This one is pretty much just what it sounds like.
- Find the Least Common Multiple.
- Convert Only One of the Fractions.
- Multiply the Denominators.
- Anchor Chart and Free Printable.
- Common Questions.