Hi K S,

If you are not already in the middle of the Numbers and Operations section of the 8th grade course, then it would probably be highly beneficial.

If you are already taking it, then try re-watching the videos before the excercises you find challenging. If you have a question about a particular video or article topic, then you can scroll down to the comments section below the said video/article and post a comment on the lesson page.

You can also ask your teacher for help with any other topics that you're having trouble with.

I hope this helps! :)