Main Idea and New Vocabulary

Key Concept: Add and Subtract Like Fractions

Example 1: Add Like Fractions

Example 2: Add Like Fractions

Example 3: Subtract Like Fractions

Example 4: Subtract Like Fractions

Example 5: Subtract Like Fractions

Example 6: Real-World Example

• Add and subtract fractions with like denominators.

• like fractions

Add Like Fractions

Find Write in simplest form.

Add the numerators.

Simplify.

Answer: __1112

Find Write in simplest form.

A.

B.

C.

D.

Add Like Fractions

Find Write in simplest form.

Add the numerators.

Use the rules for adding integers.

Answer: – __56

Find Write in simplest form.

A.

B.

C.

D.

Subtract Like Fractions

Find Write in simplest form.

Subtract the numerators.

Simplify.

Answer: __23

Find Write in simplest form.

A.

B.

C.

D.

Subtract Like Fractions

Find Write in simplest form.

Answer: – __910

Subtract the numerators.

Simplify.

Find Write in simplest form.

A.

B.

C.

D.

Subtract Like Fractions

Find . Write in simplest form.

Answer: – __12

Subtract the numerators.

Simplify.

Find – . Write in simplest form.

A.

B.

C.

D.

ART A picture mounted on art board is inch

thick. The frame for the picture is inch thick.

How much thicker than the picture is the frame?

Subtract the numerators.

Answer: The picture is inch thicker than the frame.

Simplify.=

WINDOWS A pane of window glass is inch

thick. A second pane of glass is inch thick.

How much thicker is the second pane of glass?

A. in. C. in.

B. in. D. in.