How do you say like playing mathes in Irish?

There isn't a direct translation for "like playing maths" in Irish that captures the nuance of enjoying the activity. Irish tends to be more literal. You'd need to express the liking and the playing separately.

Here are a few options, depending on the level of formality and the emphasis:

* Is maith liom matamataic a imirt: This translates to "I like playing maths," but "a imirt" (to play) might sound a bit odd with maths. It's grammatically correct but might sound unnatural to a native speaker.

* Is taitneamhach liom matamataic a dhéanamh: This translates to "I find maths enjoyable/pleasant to do." "A dhéanamh" (to do) is a better fit for maths than "a imirt". This is a more natural-sounding option.

* Baineann mé sult as matamataic: This translates to "I enjoy maths". This is probably the closest and most natural-sounding option if you're simply expressing your enjoyment of the subject. It doesn't explicitly mention *playing* maths, but implies engagement and enjoyment.

Therefore, Is taitneamhach liom matamataic a dhéanamh or Baineann mé sult as matamataic are the best options. Choose the one that best fits the context.