Add and Subtract Fractions Unlike Denominators

What must you have to add and subtract fractions?

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

2/5 + 3/10

• 7/10
• 5/10
• 1/2
• 5/15

8/9 - 1/3 = 

• 7/6
• 5/9
• 2/3
• 8/27

3/5 + 7/10

• 13/10
• 10/15
• 10/5
• 15/15

1/4 + 5/8

• 6/8
• 6/12
• 7/8
• 8/8