Adding and Subtracting Fractions

Presentation

•

Mathematics

•

5th Grade

•

Practice Problem

•

Hard

•

CCSS

5.NF.A.1, 5.NF.A.2

Standards-aligned

Mr. Dorchak

Used 39+ times

FREE Resource

9 Slides • 4 Questions

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

Adding and Subtracting Fractions Review

Thursday 1.21.21

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