I'm in my 30's. Just barely missed Common Core but I remember hearing parents with younger children complaining about it. I don't remember the math I was taught having any specific branding with it, though it may have been a late variant of New Math.

What I was taught in schools definitely still had a lot of memorization involved. I consider myself lucky that my sister taught me earlier, because I saw a lot of my bright peers struggle with the way it was taught in schools. I never had to study math outside of school for my entire academic career. She helped me to understand computers (she also taught me binary, octal, and hexadecimal systems. Hexadecimal is very useful for a kid with a GameShark and Pokemon).