While teachers do like the kids who check over their homework and tests afterwards, and ask questions, they don’t like the kids who seem to be focused primarily securing every single tenth of a point (even if they might be entitled). So even if you’re pretty sure you’re right, if right and wrong are not clear-cut or it is not a significant number of points involved, let it go.
Although you might need those points, it’s more important to make sure the teacher does not hate you.