Add and Subtract Fractions with Like Denominators

Add and Subtract Fractions with like Denominators Review

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First, we will review mixed numbers and improper fractions!

Remember the Trick! Multiply then Add!

Multiple Choice

 Write  $$2\ \frac{5}{8}$$  as an improper fraction. 

• $$\frac{21}{8}$$  

• $$\frac{11}{8}$$  

• $$\frac{21}{5}$$  

• $$\frac{21}{2}$$  

Multiple Choice

  Write  $$3\ \frac{4}{11}$$  as an improper fraction. 

• $$\frac{37}{4}$$  

• $$\frac{37}{11}$$  

• $$3\ \frac{37}{11}$$  

• $$\frac{37}{3}$$  

Multiple Choice

Write $$\frac{24}{5}$$   as a mixed number 

• $$4\ \frac{4}{5}$$  

• $$4$$  

• 5

• $$4\ \frac{20}{5}$$  

Multiple Choice

      What is $$\frac{8}{8\ }$$  equal to? 

• $$8\ \frac{1}{8\ }$$  

• $$1\ \frac{1}{8}$$  

• 1

• 8

Review how to add and subtract fractions with like denominators

Remember, Add or subtract the top and keep the bottom!

Multiple Choice

Stacy completes

$$\frac{2}{6}$$   of her science project in the morning. She continues to work on the project in the afternoon. By the end of the day, she finishes  $$\frac{5}{6}$$   of the project. What fraction of the science project did she complete after lunch? 

• 1/6

• 3/6

• 4/6

• 7/6

Multiple Choice

Look at the model. Which subtraction sentences show the difference?

• $$\frac{4}{5}\ -\ \frac{1}{5}\ =\ \frac{5}{5}$$

• $$\frac{4}{5}\ -\ \frac{1}{5}\ =\ \frac{2}{5}$$

• $$\frac{4}{5}\ -\ \frac{1}{5}\ =\ \frac{3}{5}$$

• $$\frac{4}{5}\ -\ \frac{1}{5\ }\ =\ \frac{4}{5}$$

Multiple Choice

   Mark needs  $$\frac{9}{12}$$  of a cup of cholate chips to make cookies. He has  $$\frac{2}{12}$$  of a cup of chocolate chips. How many more chocolate chips does he need? 

• $$\frac{11}{12}$$  Cups

• 5 cups 

• $$1\ \frac{1}{12}$$  

• $$\frac{7}{12}$$  

Multiple Select

Select all the equations that show different ways to represent
$$\frac{8}{10}$$  

• $$\frac{4}{10}$$  + $$\frac{4}{10}$$  =  $$\frac{8}{10}$$  

• $$\frac{8}{10}\ +\ \frac{3}{10}\ =\ \frac{8}{10}$$  

• $$\frac{1}{10}\ +\ \ \frac{8}{10}\ =\ \frac{8}{10}$$  

• $$\frac{1}{10}\ +\ \frac{5}{10}\ +\ \frac{2}{10}\ =\ \frac{8}{10}$$  

• $$\frac{1}{10}\ +\ \frac{1}{10}\ +\ \frac{1}{10}\ +\ \frac{1}{10}\ +\ \frac{1}{10}\ +\ \frac{1}{10}\ +\ \frac{1}{10}\ +\frac{1}{10\ }\ =\ \frac{8}{10}$$  

Multiple Choice

In math class, students spend $$\frac{5}{8}$$  of the time completing math task and  $$\frac{2}{8}$$  of the time doing number talks. The rest of the time was used to solve an exit slip. What fractions of math class time did the students spend on the exit slip? 

• $$\frac{3}{8}$$  

• $$\frac{7}{16}$$  

• $$\frac{7}{8}$$  

• $$\frac{2}{8}$$  

Fill in the Blanks

$\frac{6}{12}\ +\ \frac{8}{12}\$  

What is the value of the following expression? Write it as an improper fraction. Use the / symbol for the fraction bar. 

Review how to add and subtract mixed numbers.

https://youtu.be/k9N1ojfOQ8M (copy and paste to watch video)

Multiple Choice

$$12\ \frac{4}{5}\ +\ 3\frac{1}{5}$$  

Find the sum.

• $$9\ \frac{3}{5}$$  

• $$15\ \frac{4}{5}$$  

• 15

• 16

Fill in the Blanks

Zeb read a total of  $12\ \frac{3}{5}$  pages from a library book. and magazine combined. He read  $6\ \frac{4}{5}$  from the library book. How many pages did he read from the magazine? Write your answer as an improper fraction. 

Multiple Select

What is the sum? Select all of the possible answers below.  $$5\ \frac{1}{2}\ +\ 1\ \frac{1}{2}\ +\ 4\ \frac{1}{2}\ =$$  

• $$10\ \frac{1}{2}$$  

• $$11\ \frac{1}{2}$$  

• $$10\ \frac{3}{2}$$  

• $$10\ \frac{3}{8}$$  

• $$10\ \frac{3}{6}$$