Thanks for the responses. As mentioned, we were hopeful that DS would score high enough in one of the areas to apply for Davidson, but we certainly didn't anticipate the math score.
It's helpful to hear about the needs and experiences of other kids with strong math skills.
DS enjoys math but becomes highly frustrated with things that are not immediately apparent to him- it's why we were surprised that he scored so high in applied math. Usually, he has no patience with word problems, or anything that can't be instantly understood and solved.