Well i had new math-- long before most, since my school used to cut cost for text books by always offering to be a pilot for new books and curiculums (more work for the teachers, but the teachers where all nuns, and didn't have much say.)

since i had new math, when my cousins still had old math, i saw a bit of both.. i like new math. some stuff, at the time seemed total stupid-- like numbering systems.. I could see no use for binary or octal.. but 20 odd years later, when i got a computer in 1982, and had to use binary and hexidecimal, Bing! it all came back to me, clear as a bell.
and learning Hex was so easy, since i already was primed to learn numbering systems! i can add and subtract in binary-- i don't have to convert to decimal, and i can do very simple multiplicaion, (times 2!) too! and i am one of a select group that knows octal! and as Musick, and some others know, i even know octal jokes! (request by PM)

i loved new math for the most part... and still love math!