Some students find this site's explanations easier than Mometrix and Khan Academy. This should also allow you to watch the videos that go with the exercises that we are doing in class.
HiSET math help
This website has videos and practice problems that are scored in real time.
There is a list of videos that are numbered so you don't have to type in the topic. The list is posted in the classroom and you can have a copy of the list if you need one.
There are many videos here to help you figure out specific categories of problems. If you need additional help email me.
HiSET Practice Tests
This links to the official HiSET page. All subjects that are on the HiSET have practice tests here.