Fractions with Common Denominators

 $\frac{4}{\ 5\ }\ -\ \frac{2}{5}\ =$  

•  $\frac{2}{10}$  

•  $\frac{2}{0}$  

•  $\frac{2}{5}$  

3/4 - (-1/4)

• 1/2
• -1/2
• -5/8
• 1

3/9 + 4/9

• 7/18
• 7/9
• 12/9
• 12/81

Simplify the fraction
15/20

• 5/10
• 3/4
• 2/3
• 1/5

Which fraction is equivalent to 1/2?

• 10/19
• 10/17
• 10/11
• 10/20