Fractions

This task is about adding and subtracting fractions.
Questions/instructions

What is the answer to the following fraction number sentences?

Write your answers after each number sentence. 
 
1.
   
\(1 \over 4\) + \(1 \over 4\)
 
   
2.   
 
\(2 \over 3\) + \(1 \over 3\)
 
   
3.   
 
\(1 \over 2\) + \(1 \over 2\) + \(1 \over 2\)
 
   
4.   
 
3\(1 \over 3\) + 2\(1 \over 3\)
 
   
5.   
 
\(3 \over 4\)\(1 \over 4\)
 
   
6.   
 
\(1 \over 2\)\(1 \over 4\)
 
   
7.   
 
6 – \(1 \over 2\)