The kid's answer is the only correct answer. It's not half right, or 5/6 or 4/6 right. It's the only correct answer that fits the question. The teacher is a moron who has no business in a math classroom except as a remedial student.
Fair. I think it's important from an "Is this True AGI?" sense to distinguish these, but yes, in the colloquial sense I guess the system could be said to understand, even if it's not strictly the actual LLM part that does it.
I'll go further: humanity could solve 99.9% of its problems if people would mind their own fuckin' business.