5th Ch 8 Adding & Subtracting Fractions Review

+/- with Like Denominators

100

1/6 + 4/6

5/6

200

1 - 1/8

7/8

300

3/4 - 1/4

1/2

400

9/10 - 7/10

1/5

500

2 + 4/12

2 1/3

+/- with Unlike Denominators

100

1/4 + 5/8

7/8

200

3/12 - 1/8

1/8

300

2/5 + 1/2

9/10

400

7/12 - 1/2

1/12

500

5/6 - 2/12

3/4

Adding Mixed Numbers with Unlike Denominators

100

4 1/6 + 9 2/3

13 5/6

200

10 5/6 + 8 14/15

19 23/30

300

8 1/4 + 8 5/6

17 1/12

400

8 4/6 + 4 3/5

13 4/15

500

8 7/9 + 2 2/3

11 12/27

Subtracting Mixed Numbers with Unlike Denominators

100

7 3/4 - 1 1/12

6 2/3

200

9 1/2 - 5 8/12

3 5/6

300

11 1/2- 7 3/8

4 1/8

400

17  -  8 2/3

8 1/3

500

7 4/5 - 2 9/10

4 9/10

Vocabulary for Working with Fractions

100

Answers must be ___________. (Hint: This is the last step you should always complete when working with fractions.)

Simplified

200

When you multiply fractions, the procedure is to _____________________

Multiply across top and multiply across bottom

300

12/7 is an example of an _______________. This is not in the simplest form!

improper fraction

400

Fractions must have the same _________ before adding or subtracting. (Hint: This is the 1st step when adding or subtracting fractions)

denominator

500

Use __________ fractions after finding the LCM or common denominator before adding or subtracting. (Hint: This is the 2nd step when adding or subtracting fractions)

equivalent