Just throwing this one out there as it's something that irritates me daily at work where - due to working in financial sector - there are a lot of explanations of maths flying around and every time someone explains that something is "xx times by xx" I grind my teeth.
I was always taught that it was "xx multiplied by xx" OR "xx times xx" - not both.
Now my DH has started to say it when helping my DS with his homework and I'm lurking around correcting him every time, my main argument being you don't say your times' tables like this "2 times by 2 is" - or do you?!