Lesson 6-2 Pages 244-247

Adding and Subtracting Fractions

Lesson Check 6-1

What you will learn!

How to add and subtract fractions.

What you really need to know!

Like fractions are fractions that have the same denominator. To add or subtract like fractions, add or subtract the numerators and write the result over the denominator.

Simplify if necessary.

What you really need to know!

To add or subtract unlike fractions, rename the fractions with a least common denominator. Then add or subtract as with like fractions.

Simplify if necessary.

12

11

12

4

12

7

Example 1:

12

4

12

7

Example 2:

6

1

6

5

3

2

6

4

6

1

6

5

Example 3:

9

1

3

1

9

3

3

3

3

1

9

4

9

1

9

3

9

1

1

1

9

1

Example 4:

6

1

4

3

12

9

3

3

4

3

12

7

12

2

12

9

12

2

2

2

6

1

Example 5:

A picture is mounted on art board that is 1/8 inch thick. The frame selected for the picture is 1/2 inch thick. The thickness of the picture is so small that it can be ignored. What thickness of cardboard is needed to hold the picture in place?

inch8

3

8

1

8

4

Example 5:

8

1

2

1

8

4

4

4

2

1

8

1

1

1

8

1

Page 246

Guided Practice

#’s 4-14

Pages 244-245 with someone at home and study

examples!

Read:

Homework: Page 246-247

#’s 16-40 even

#’s 43-54

Lesson Check 6-2

Page

577

Lesson 6-2

Lesson Check 6-2