Adding Fractions: Like and Unlike Denominators Explained

This video provides a quick review of adding fractions, suitable for learners at various levels. It covers two examples: one with fractions having a common denominator and another with different denominators. The video explains how to find a common denominator using the least common multiple and demonstrates the process of renaming fractions to add them. The tutorial concludes with simplified answers for each example.

What is the first step in adding fractions?

• Add the numerators directly

• Ensure the denominators are the same

• Simplify the fractions

• Find the least common multiple

What is the sum of 3/7 and 2/7?

• 5/7

• 5/14

• 5/7

• 1/2

Can 5/7 be simplified further?

• Yes, to 1/7

• Yes, to 2/7

• No, it is in simplest form

• Yes, to 1/2

What do you do if the fractions already have a common denominator?

• Find a new common denominator

• Simplify the fractions first

• Add the numerators and keep the denominator

• Multiply the denominators

How do you find a common denominator for fractions with different denominators?

• Find the least common multiple of the denominators

• Use the highest denominator as the common denominator

• Add the denominators

• Multiply the denominators

What is the least common multiple of 9 and 6?

• 54

• 36

• 72

• 18

After finding the common denominator, what is the next step?

• Multiply the fractions

• Rename the fractions with the common denominator

• Add the denominators

• Simplify the fractions

What is the sum of 4/9 and 1/6 after finding a common denominator?

• 11/18

• 9/18

• 12/18

• 5/18

Is 11/18 in its simplest form?

• No, it can be simplified to 5/9

• No, it can be simplified to 1/2

• Yes

• No, it can be simplified to 6/18

What is the purpose of finding a common denominator?

• To add or subtract fractions

• To divide the fractions

• To multiply the fractions

• To simplify the fractions