Add and Subtract Fractions with like Denominators Review

4TH GRADE STAAR REVIEW

4.3E Adding and Subtracting Fractions​

First, we will review mixed numbers and improper fractions!

Remember the Trick!

Mixed to Improper:

MAD: Multiply, Add, Denominator

Improper to Mixed Number:

TIBO: TOP, IN, BOTTOM, OUT

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

      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 Select

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

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

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

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

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

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

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

Multiple Select

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

• $$10\ \frac{1}{2}$$  

• $$11\ \frac{1}{2}$$  

• $$10\ \frac{3}{2}$$  

• $$10\ \frac{3}{8}$$  

• $$10\ \frac{3}{6}$$