Adding & Subtracting Fractions

Adding & Subtracting Fractions with Like Denominators

100

1/6 + 4/6

5/6

200

3/4 - 1/4

1/2

300

9/10 - 7/10

1/5

400

2/12 + 4/12

1/2

500

2/15 + 1/15

1/5

Adding & Subtracting Fractions with Unlike Denominators

100

1/4 + 5/8

7/8

200

2/5 + 1/2

9/10

300

7/12 - 1/2

1/12

400

5/6 - 2/12

3/4

500

3/12 - 1/8

1/8

Adding Mixed Numbers with Unlike Denominators

100

4 1/6 + 9 2/3

13 5/6

200

8 1/4 + 8 1/2

16 3/4

300

8 1/6 + 4 1/2

12 2/3

400

8 1/12 + 2 2/3

10 3/4

500

10 5/6 + 8 2/12

19

Subtracting Mixed Numbers with Unlike Denominators

100

7 3/4 - 1 1/12

6 2/3

200

11 1/2- 7 3/8

4 1/8

300

17 8/9 - 8 2/3

9 2/9

400

7 4/5 - 2 9/10

4 9/10

500

9 1/2 - 5 8/12

3 5/6

Tips for Working with Fractions

100

Answers must be ___________.

Simplified

200

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

improper fraction

300

Fractions must have the same _________ before adding or subtracting.

denominator

400

Use __________ fractions or LCM to find the same denominator before adding or subtracting.

equivalent

500

To do math correctly, Mrs. Zebrowski must have this much coffee and this much creamer.  Her cup holds 8 oz of coffee.

At least 5/8 coffee and 1/8 creamer