4th Grade Math 3.3, Area Models and Partial Products for 2-digit Factors

We can use area models and partial products to multiply 2-digit factors. We draw an area model to find the partial products and then add the partial products to find the final answer. We review the Distributive Property. We show and solve several problems involving area models and partial products. It doesn't matter how we break up factors, because their partial products will always equal the same sum. We discuss the importance of using parentheses when writing our factors and partial products. It's easier to break apart factors into multiples of 10 because we can quickly multiply basic facts and add the amount of zeros in the factors to the partial products. Modeling partial products can help us find the products of greater numbers by helping us do mental math. When we multiply a 2-digit factor by a 1-digit factor, we will have TWO partial products. When we multiply a 2-digit factor by a 2-digit factor, we will have FOUR partial products.

4th Grade Math 2.7, Multiply Using Partial Products
https://youtu.be/BnHqL31B3GA

4th Grade Math 2.10, Multiply 2-digit Numbers by 1-digit Numbers with Regrouping
https://youtu.be/6c8cpUqGcDY

4th Grade Math Playlist (2015)
https://www.youtube.com/playlist?list=PLKi4WTp6PRGX7RhcxctRibNb7V091JZfn

I'm using the Houghton Mifflin Go Math!
2015 copyright textbook for this playlist.

You can practice online using the textbook's website
https://www.gomathacademy.com/

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