Adding & Subtracting Fractions

Simping

100

6/12

1/2

200

25/30

5/6

300

3/18

1/6

400

20/72

5/18

500

28/16

1  3/4

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

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

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. (Hint: This is the 1st step when adding or subtracting fractions)

denominator

400

When we simplify fractions we find the ___________.

GCF

500

What is used as the common denominator when adding and subtracting fractions? 

LCM or LCD