Aut cum scuto aut in scuto
They hate it when the questions are poorly written and kids give a correct answer, but not the answer they wanted.
This kid has clear gone past the "estimate" stage, which is why they narrow mindedly decided to mark her wrong, to the point where he/she knows the answer because they know the simple math to get there. But hey, why let that get in the way of frustrating an excelling young scholar?
When did the word "reasonable" become a math term? Math is wonderfully objective. This problem is grotesquely subjective. The suggested solution to a math problem is either correct, or incorrect. There's no crying in baseball and no reasonable/unreasonable in math. Is Common Core reasonable? Explain your answer.(2-7)