Adding and Subtracting Unlike Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does it mean for fractions to be 'like' or 'unlike'?

Back

Like fractions have the same denominator, while unlike fractions have different denominators.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you find a common denominator for two fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators.

Front

What is the first step in adding or subtracting unlike fractions?

Back

The first step is to find a common denominator for the fractions.

Tags

CCSS.7.NS.A.1C

Front

What is the sum of 3/8 and 1/4?

Back

5/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is 5/6 - 1/3?

Back

1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you simplify the fraction 4/12?

Back

4/12 simplifies to 1/3.

Front

What is 8/15 - 1/5?

Back

7/15.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What do you need to do before adding or subtracting fractions?

Back

You need to have common denominators.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the least common multiple (LCM) of 4 and 6?

Back

The LCM of 4 and 6 is 12.