The '550 ÷ 2 = 225' meme is a popular internet phenomenon that highlights a common cognitive bias in mental arithmetic. Similar to the '77 + 33 = 100' meme, it relies on the brain's tendency to take shortcuts; many people intuitively split 550 into 500 and 50, then mistakenly conclude the halves are 200 and 25, or simply feel that 225 'looks' correct. It gained significant traction on platforms like Twitter, TikTok, and Reddit as users shared their genuine frustration and humorous realizations upon discovering the correct answer is actually 275. The meme is typically used to represent overconfidence in one's intelligence followed by a humbling, basic mistake, often paired with reaction images of confusion or despair.