mom2boys - I read somewhere (I'll see if I can find a link) that kids that are high in VCI (verbal comprehension) do better in Algebra whereas kids that are higher in PRI do better in geometry. Now it didn't mention numbers and of course all is relative but it made sense to me at the time I read it lol.
My DS who is VCI>>PRI is great at critical thinking and intro to algebra concepts but is not quick on the rote memorization. Although I've spent 3days playing just games for division facts/factors/multi facts and he's getting faster already! He thrives on the competition aspect of the game and by playing them often (4games in a row) he's already showing progress!
