Ben Affleck on co-parenting with Jennifer Garner: "We try our best"

Jennifer Garner and Ben Affleck prior to their June 2015 split.

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Ben Affleck is getting candid about co-parenting his three children with estranged wife, Jennifer Garner.

The A-list couple separated over a year ago, but continue to live on the same property and share responsibilities for their daughters, Violet and Seraphina, and son Samuel.

“We do our best,” the actor and producer told ET’s Lauren Zima at the Los Angeles premiere of his new film, “The Accountant.” “We try our best.”

The 44-year-old star added that while the couple share parenting duties, there’s one task he’s not so great with -- homework!

“My areas of expertise with the kids [are] spotty at best,” he said. “Not homework. I only play an accountant in the movie. In real life, I’m badly wanting.”

He may not be putting his hand up to help with homework, but the children’s work is never far from his side. Asked about his trailer must-haves when he’s filming, the Academy Award winner noted they revolve around the youngsters.

“[It’s] mostly stuff from my kids,” he said. “It’s the only personal stuff I have -- the drawings and art. It’s a good place to hang up the latest artwork to come out of school.”

With “The Accountant” hitting theaters on Friday, Affleck will next be seen in “Live by Night,” which he also co-produced with Leonardo DiCaprio, and next year’s “Justice League” film.

The highly-anticipated superhero flick has just wrapped shooting and Affleck is looking forward to seeing how the film’s received.

“It’s fun, in one word,” he said. “I hope you like it, I think it’s gonna be a lot of fun.”

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