Adding Mixed Fractions with Unlike Denominators

Bell Ringer:  101 Questions

http://www.101qs.com/

Lesson Frame:

• We will take notes on adding mixed fractions with unlike denominators.
• I will compare adding proper fractions and adding mixed fractions.

Lesson:

I created this graphic to use as notes for my students.  We placed this in our math journals, and then used the steps to solve problems.  I explained that there was only one new idea:  we needed to add the whole numbers and then somehow manage not to forget to add them at the end!

• Step 1:  add the whole numbers together and "store" the answer to use later.
• Step 2:  use Crisscross Applesauce to add the fractions.

https://jrh794.wordpress.com/2012/01/23/fast-fractions-easy-system/

• Step 3:  simplify using the ladder method and prime numbers

http://dlaughter.pbworks.com/w/page/115387102/GCF%20Factoring%20Using%20Ladder%20Method

• Step 4:  convert improper fractions to mixed numbers

https://www.teacherspayteachers.com/Product/Changing-Improper-Fractions-to-Mixed-Numbers-Poster-or-Desk-Aid-1832981

• Step 5:  don't forget to add the "stored" whole number.

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https://www.teacherspayteachers.com/Product/5th-Grade-Math-Centers-5th-Grade-Fraction-Activities-Color-by-Number-2938762

We used these steps to solve six problems.  Once again, I used a mystery picture as our assignment.  I have broken the 24 problems into 4 groups of 6, created a Google Form, and included my "close" as the seventh question.  Students will work their problems on notebook paper so that I can help as needed.

Close: 

Compare adding proper fractions to adding mixed fractions.  

How are they alike?

Assignment:

Fifth Grade Builder #23