Multiplicación y División de Racionales: Octavo año

https://www.youtube.com/watch?v=kYyDc0XRUeg&list=PLeySRPnY35dFK2lF2mu30NYq-79SYEwuz

https://www.youtube.com/watch?v=myb8EOaK-Nk&t=190s 

https://www.youtube.com/watch?v=p_AlfSeIJ8I&t=13s

https://www.youtube.com/watch?v=GMsq8e40EUg&list=PLeySRPnY35dFK2lF2mu30NYq-79SYEwuz&index=3

https://www.youtube.com/watch?v=-ytm1uOGOXk

https://www.youtube.com/watch?v=RNtvQitNbLk&list=RDCMUCwScwtu5zVqc_wHtRx9XvDA&index=5

https://www.youtube.com/watch?v=LVHo5xvsvO0&list=RDCMUCwScwtu5zVqc_wHtRx9XvDA&index=3

https://www.youtube.com/watch?v=h2QuF_wToa0

https://www.youtube.com/watch?v=ENnUcQ-P6cU