Is this grammatically correct?

Here is a headline from the Times Online (UK)

"Big Bang at the atomic lab after scientists get their maths wrong"

I know this is not a complete sentence (Most headlines are not are they?) but is this otherwise grammatically correct in “standard UK English”. An American would have said “get their math wrong” not “get their maths wrong”.

It uses the kind of grammar typical to newspaper headlines. What do you think is wrong with it?

It's "math" in North America & "maths" elsewhere.

Thanks Jim, assumed that was the case but was not certain. "maths" just sounds odd to an American ear.

''mathS'' = mathematicS

It is surprizing to read that the rest of the world knows (maths is a short form of the word mathematics) but not Americans who have a knack for coming up slangy and Abbreviation type of words every now and then.

I'm American and I know that "math" is short for "math(ematics)".

That's a matter of spelling or lexicon, not grammar.