Adding and Subtracting Fractions

Adding and Subtracting Fractions Review

Thursday 1.21.21

In today's slides, you will...

• Review how to add and subtract fractions with unlike denominators

• Learn another strategy to help us work 'smarter, not harder."

• You will see a mix of videos, slides, and problems.

Adding and Subtracting Fractions with a model and the butterfly method

Watch this video to review. 

BUT WAIT!...

There is another strategy that I recommend using to help us get our answer in simplest form.

This strategy is actually more precise and accurate than drawing a model and/or using the butterfly method.

Multiple Choice

Solve on your own! Make sure your answer is in simplest form!

Don't forget... we are adding!

 $\frac{1}{4}+\frac{1}{6}=$  

•  $\frac{10}{24}$  

•  $\frac{5}{12}$  

•  $\frac{2}{24}$  

•  $\frac{1}{12}$  

Multiple Choice

Try another one! Make sure your answer is in simplest form!

Don't forget... we are subtracting!

 $\frac{8}{9}-\frac{5}{6}=$  

•  $\frac{1}{18}$  

•  $\frac{3}{4}$  

•  $\frac{6}{7}$  

•  $\frac{10}{12}$  

I am going to model one more problem.

• In future grades, you will be asked to write your answers in simplest form.

• As stated, this strategy is the best way to make sure our answers are in simplest form.

• Watch how I do one more problem, and then you can try another one on your own after!

Multiple Choice

 $\frac{3}{5}-\frac{3}{10}=$ 


Hint!!!!: The denominator is not going to be 50.  

•  $\frac{3}{5}$  

•  $\frac{6}{20}$  

•  $\frac{3}{10}$  

•  $\frac{5}{10}$  

Example 1: Adding/Subtracting Whole Numbers and Mixed Numbers

 $1\ +\ 1\frac{3}{4}=\$  

Example 2: Adding/Subtracting Whole Numbers and Mixed Numbers

 $3\ -\ 1\frac{2}{3}=$  

Multiple Choice

Try one on your own!

 $2\ \frac{7}{10}\ +\ 4$  = 

•  $2\frac{3}{10}$  

•  $2\frac{7}{10}$  

•  $6\frac{7}{10}$  

•  $6\frac{3}{10}$  

Thank you for watching!

Now that you are finished, I made you a Quizizz game to play independently!

Click on the link below! Have fun and good luck!

Link: https://quizizz.com/join?gc=26657524