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 it mean to have unlike denominators?

Back

Unlike denominators are denominators that are not the same. For example, in the fractions 1/4 and 1/3, 4 and 3 are unlike denominators.

Tags

CCSS.4.NF.A.2

Front

How do you find the least common denominator (LCD) of two fractions?

Back

To find the LCD, list the multiples of each denominator and find the smallest multiple that both denominators share.

Front

What is the least common denominator of 1/7 and 3/6?

Back

The least common denominator of 1/7 and 3/6 is 42.

Front

How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find the least common denominator, convert each fraction to an equivalent fraction with the LCD, and then add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the process to subtract fractions with unlike denominators?

Back

To subtract fractions with unlike denominators, find the least common denominator, convert each fraction to an equivalent fraction with the LCD, and then subtract the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Back

Tags

CCSS.7.NS.A.1C

Front

How do you simplify a fraction?

Back

To simplify a fraction, divide the numerator and the denominator by their greatest common factor (GCF).

Front

Back

Front

Back

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2