Module 4--Common Fractions [Adding with Common Denominators]

Add the following fractions

 $\frac{1}{4}+\frac{2}{4}=$  

Add the following fractions

 $\frac{1}{2}+\frac{1}{2}=$  

Add the following fractions

 $\frac{1}{5}+\frac{3}{5}=$  

Add the following fractions

 $\frac{1}{7}+\frac{5}{7}=$  

Add the following fractions

 $\frac{3}{9}+\frac{5}{9}=$  

Add the following fractions

 $\frac{1}{6}+\frac{3}{6}=$  

Add the following fractions

 $\frac{6}{10}+\frac{3}{10}=$  

Add the following fractions

 $\frac{6}{12}+\frac{5}{12}=$  

Add the following fractions

 $\frac{10}{15}+\frac{5}{15}=$  

Add the following fractions

 $\frac{10}{20}+\frac{6}{20}=$