Adding and subtracting Fractions with Unlike Denominators

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 the denominator in a fraction represent?

Back

The denominator indicates how many equal parts the whole is divided into.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does the numerator in a fraction represent?

Back

The numerator shows how many parts of the whole are being considered.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is an unlike denominator?

Back

Unlike denominators are denominators that are not the same in two or more fractions.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is a common denominator?

Back

A common denominator is a number that can be used as a denominator for two or more fractions, making them easier to add or subtract.

Front

How do you find a common denominator for 1/5 and 5/6?

Back

The least common multiple (LCM) of the denominators (5 and 6) is 30, which can be used as a common denominator.

Front

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

Back

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

Tags

CCSS.7.NS.A.1C

Front

How do you convert fractions to have a common denominator?

Back

Multiply the numerator and denominator of each fraction by the necessary factor to make the denominators the same.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the result of 8/9 - 5/6?

Back

1/18.

Tags

CCSS.7.NS.A.1C

Front

If Andrew ran 1/3 of a mile and swam 5/6 of a mile, how much farther did he swim than run?

Back

1/2 of a mile.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2