Operations with Fractions (no mixed numbers)

With fractions, for which operation(s) must you have common denominators to correctly perform the operation? (choose all that apply)

• Addition

• Subtraction

• Multiplication

• Division

What would be the least common denominator needed to find the sum

 $\frac{2}{3}+\frac{5}{6}$  ?

• 3

• 12

• 6

• 18

Which of the following is the correct sum of

 $\frac{2}{5}+\frac{1}{5}$  =?

•  $\frac{3}{10}$  

•  $\frac{3}{5}$  

•  $\frac{2}{25}$  

•  $\frac{3}{25}$  

 $\frac{17}{23}-\frac{11}{23}$  

Find the difference

•  $\frac{28}{23}$  

•  $\frac{6}{0}$  

•  $\frac{6}{23}$  

•  $\frac{-6}{23}$  

What is the sum of $\frac{11}{12}+\frac{2}{12}$  ?

•  $\frac{13}{12}$  

•  $\frac{13}{24}$  

•  $\frac{9}{12}$  

•  $\frac{5}{12}$  

Which of these is equivalent to 

 $\frac{2}{3}$  ?   (check all that apply)

•  $\frac{4}{6}$  

•  $\frac{8}{12}$  

•  $\frac{6}{9}$  

•  $\frac{14}{21}$  

Select the 2 correct ways to find the sum

 $\frac{2}{3}+\frac{5}{6}$   

•  $\frac{4}{6}+\frac{5}{6}$  

•  $\frac{5}{6}+\frac{5}{6}$  

•  $\frac{8}{12}+\frac{10}{12}$  

•  $\frac{6}{12}+\frac{10}{12}$  

 $\frac{2}{3}+\frac{5}{6}$  

Find the sum

•  $\frac{7}{9}$  

•  $\frac{7}{6}$  

•  $\frac{21}{12}$  

•  $\frac{9}{6}$  

 $\frac{11}{12}-\frac{2}{3}$  

Find the difference

•  $\frac{9}{9}$  

•  $\frac{3}{12}$  

•  $\frac{9}{12}$  

•  $\frac{5}{12}$  

 $\frac{2}{5}+\frac{1}{3}$  

Find the sum

•  $\frac{3}{8}$  

•  $\frac{11}{15}$  

•  $\frac{3}{15}$  

•  $\frac{10}{15}$