Adding/Subtracting Fractions

Adding fractions with same denominator.

100

1/3 + 2/3

What is 1?

200

10/20 + 13/20 

What is 33/20?

300

20/30 + 22/30

What is 21/10?

Adding fractions with different denominators.

100

2/4 + 5/8

What is 9/8?

200

3/10 + 11/15

What is 29/15?

300

4/8 + 3/7

What is 13/14?

Subtracting fractions with same denominator.

100

10/15 - 8/15

What is 2/15?

200

30/40 - 18/40 

What is 3/10?

300

30/20 - 10/20

What is 1?

Subtracting fractions with different denominators.

100

9/3 - 15/5 

What is 0?

200

3/4 - 1/2 

What is 1/4?

300

1/4 - 3/8

What is -1/8?