Adding and Subtracting Fractions

Adding Alike Denominators

100

1/4 + 2/4 = 

3/4

200

3/10 + 1/10 = 

4/10 

300

1/5 + 2/5 =

3/5

400

4/15 + 8/15 = 

12/15

500

12/37 + 17/37 = 

29/37

600

182/529 + 321/529 = 

503/529

Subtracting Alike Denominators

100

7/10 - 2/10 =

5/10

200

2/3 - 1/3 =

1/3

300

13/15 - 7/15 =

6/15

400

21/25 - 19/25 =

2/25

500

87/100 - 43/100 =

44/100

600

879/900 - 534/900 = 

345/900

Adding fractions with unalike Denominators

100

1/2 + 1/4 = 

3/4

200

2/5 + 3/10 = 

7/10

300

1/3 + 2/6 =

4/6 OR 2/3

400

1/8 + 3/4 =

7/8

500

36/75 + 27/150 =

99/150

600

4/13+8/17 = 

172/221

Subtracting fractions with unalike Denominators

100

1/4 - 1/8 = 

1/8

200

1/3 - 2/15 = 

3/15

300

5/6 - 33/42 = 

2/42 

400

3/4 - 45/64 =

3/64

500

96/100 - 21/25 =

12/100

600

20/21 - 300/357 =

40/357

Adding & Subtracting Fractions EXTREME (you need to reduce)

100

1/2 + 30/150 = 

21/30

200

12/8 - 1/40 = 

1 19/40

300

1 1/4 + 7/8 = 

2 1/8