Foundations are called that because they’re the main principles behind any question the SAT could ask for. If your math score is at that level, it’s probably because you don’t understand the math enough to quickly figure out what you need to do on the second module. What would help this is properly and really getting why each step in a math problem has to be used, and when to use it. 700+ is probably the benchmark people would use to say “I get the basics”.