Fraction Addition and Subtraction Checkpoint

Find the common denominator and solve the problem.
 $\frac{1}{2}+\frac{3}{10}=\frac{ }{ }\ +\frac{ }{ }=\frac{ }{ }$  

(a)  

 $\frac{1}{2}-\frac{3}{10}=\frac{ }{ }\ -\ \frac{ }{ }\ =\frac{ }{ }$  

Find the common denominator and then add and subtract.

(a)  

Erin went outside to get exercise. She walked for  $\frac{1}{12}$  of an hour, jogged for  $\frac{2}{3}$  of an hour, and then walked again for  $\frac{1}{6}$  of an hour. How many minutes did Erin exercise in all?

What fraction of an hour did she exercise?

Find the following:
 $\frac{1}{3}of\ 60=$  

Find the following:
 $\frac{1}{5}\ of\ 100\ =$  

Which is a better buy? 4 cans for $6 or 8 cans for $10.

(a)  

Cooper's jump rope is  $4\ \frac{2}{5}$  feet long. Luke's jump rope is   $4\ \frac{3}{4}$  feet long. Whose jump rope is longer. How much longer?