Adding & Subtracting Fractions with UNLIKE Denominators

Front

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

Back

Find a common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Can you add fractions with unlike denominators directly?

Back

No, you cannot add unlike denominators directly.

Tags

CCSS.7.NS.A.1C

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions.

Front

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

Back

List the multiples of each denominator and find the smallest multiple they share.

Front

If you have the fractions 1/4 and 1/6, what is their least common denominator?

Back

The least common denominator is 12.

Front

What do you do after finding a common denominator?

Back

Convert each fraction to an equivalent fraction with the common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

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

Back

Multiply both the numerator and the denominator by the same number.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

If you have 1/4 and convert it to a fraction with a denominator of 12, what is the new fraction?

Back

The new fraction is 3/12.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is the process to add two fractions with the same denominator?

Back

Add the numerators and keep the denominator the same.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

When adding 1/8 and 5/9, what is the first step?

Back

Find a common denominator before adding.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2