Adding and Subtracting Fractions

 $\frac{8}{11\ }\ -\ \frac{3}{11}$  

•  $\frac{5}{22}$  

•  

   $\frac{5}{11}$ 

•   $\frac{11}{11}$ 

•   $None\ of\ the\ above\$ 

 $\frac{3}{5\ }\ +\ \frac{4}{5}$  

•  $\frac{1}{5}$  

•   $\frac{7}{10}$  

•   $\frac{7}{5}$ 

•  $1\ \frac{2}{5}$  

 $\frac{4}{15\ }\ -\ \frac{2}{15}$  

•  $\frac{7}{15}$  

•  $\frac{2}{30}$   

•   $\frac{2}{15}$ 

•   $None\ of\ the\ above\$ 

 $\frac{1}{3\ }\ +\ \frac{4}{3}$  

•  $\frac{5}{3}$  

•   $1\ \frac{2}{3}$  

•   $\frac{5}{6}$ 

• None of the above 

 $\frac{4}{5\ }\ +\ \frac{6}{5}$  

•  $\frac{10}{10}$  

•   $\ \frac{2}{5}$  

• 2

•  $\frac{10}{5}$  

 $\frac{9}{20}\ -\ \frac{5}{20}$  

•  $\frac{4}{20}$  

•  $\frac{4}{40}$   

•   $\frac{3}{20}$ 

•   $None\ of\ the\ above\$ 

Last week Ellen sold 3 stamps in her collection. This week she added 5 stamps to her collection. Now Ellen has 25 collector stamps. What fraction of the stamps did she collect in the past two weeks?

• $\frac{5}{25}$

• $\frac{27}{30}$

• $\frac{8}{25}$

• $\frac{5}{30}$

I have a cookie recipe that calls for 3/4 cup of sugar. Ms. Koch has a cookie recipe that calls for 2/4 cup of sugar. How much sugar is needed altogether for the recipes?

• $\frac{1}{4}$

• $\frac{5}{4}$

• $1\ \frac{1}{4}$

• $\frac{5}{8}$

I have 10 projects that I have to complete this week. If I complete 4 projects by Wednesday, what fraction must I complete before the end of the week?

• $\frac{6}{10}$

• $\frac{4}{10}$

• $\frac{10}{4}$

• $\frac{10}{6}$

Joe has 20 bonus points in science. Yesterday, he earned 2 bonus points. Today he earned 5 bonus points. What fraction of his bonus points did he earn the last two days?

• $\frac{7}{27}$

• $\frac{2}{20}$

• $\frac{5}{20}$

• $\frac{7}{20}$