Thanks ColinsMum. While I understand sig figs, I don't think it should be the focus for eight year old kids learning math. If they start to write out decimal division problems to a ridiculous number of digits, the teacher might make a brief mention of sig figs, but the teacher should leave it at that.

While engineers should stick to sig figs, I am an engineer and don't worry about significant figures - civil engineers typically round and approximate at random and no one cares. Surveyors care, but civil engineers don't.