Adding and subtracting unlike fractions

Front

What is an unlike fraction?

Back

Unlike fractions are fractions that have different denominators.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you find a common denominator for unlike fractions?

Back

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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 formula for adding fractions with unlike denominators?

Back

To add fractions with unlike denominators, convert them to equivalent fractions with a common denominator, then add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the formula for subtracting fractions with unlike denominators?

Back

To subtract fractions with unlike denominators, convert them to equivalent fractions with a common denominator, then subtract the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the least common multiple (LCM) of 3 and 5?

Back

The least common multiple of 3 and 5 is 15.

Front

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

Back

The least common multiple of 4 and 6 is 12.

Front

How do you convert a fraction to an equivalent fraction with a common denominator?

Back

Multiply the numerator and denominator of the fraction by the same number to create an equivalent fraction with the desired denominator.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is the result of 8/15 - 1/5?

Back

The result is 1/3.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 3/5 - 3/10?

Back

The result is 3/10.

Tags

CCSS.7.NS.A.1C