What video game has violence and math?

I have a teen and he likes games like call of duty, GTA and assassins creed or something like that… I'm looking to find him a game that has this things and he can learn to add, subtract, divide and multiply, something that has math in it and he can enjoy both. What games?

There's a game called "Catherine", seems perfect for you. It is a puzzle that needs thinking with a good story (you can decide/change the storyline/ending)
"Beyond: Twou Souls" and "Heavy Rain", both have storyline where you have to think through (the way you think and play will change the storyline/endings), it has puzzles as mini games.
Also, Sherlock Holmes, Doctor Who, etc.
Well, there are lots of games similar to what you have in mind but they are mostly for PC not for PS3/PS4. (eg: Agatha Christie games, Hidden Objects, etc.)
That is all I can think of, I'll come back when I have something else on my mind.

A violent math game? Hmm never heard of a genre like that. Maybe you can create one and call it "Death by the Numbers".

I can't think of any learning games with violence, exept typign of the dead. There's portal?

Gta. You shoot people and the guns have angles and degrees.