Wednesday, September 25, 2019

Using Al Gore Algorithms to Multiply

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Fifth graders are kicking off their math year with  
multiplication algorithms. 


No not Al Gore. 

I said, "AL-GOR-ITHMs."



The algorithm we're dealing with today will help us to solve multiplication problems in 4 steps.  

X the Ones
Magic Zero
X the Tens
Add 'em Up! 

This video will help explain in more detail...



Let's try it...






This year, it will be helpful to solve problems on graph paper, so that you line digits up correctly. Click on the image below to download printable graph paper! 😄



If you are having a hard time with this concept because you don't have the multiplication facts memorized, please feel free to add this multiplication chart to your spiral. You will use it A LOT this year!

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