Fractions Overview

3/5 + 3/10

• 9/12

• 9/10

• 3/5

• 6/10

1/3 + 1/9

• 4/9

• 9/12

• 6/15

• 3/12

5/12 + 1/3

• 6/12

• 9/12

• 6/15

• 3/4

1/6 + 1/12

• 3/12

• 3/8

• 2/12

• 1/4

2/3 +2/9

• 4/9

• 8/9

• 4/12

• 4/18

1/2 + 9/20

• 10/20

• 1/2

• 13/20

• 19/20

3/4  -  1/2

• 1/3
• 1/4
• 2/3
• 1/5

1/2  -  1/8

• 5/8
• 2/5
• 3/8
• 5/6

3/10  -  1/5

• 2/11
• 4/5
• 2/3
• 1/10

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators