There is a very good video explaining 2 digit times 2 digit numbers using the area model at Learn Zillion. Go to
www.learnzillion.com and use the code
LZ1879 to view the 2 digit times 2 digit movie.
Here is another movie about multiplying 4 digit numbers times one digit numbers, also at
www.learnzillion.com . Use the code
LZ1878 to view the 4 digit times one digit movie
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