What’s Four and Six?

　　Dad: Tom,what’s four and six? Son: Em……,I don’t know,dad.

　　Dad: You are foolish. It’s ten.

　　Son: That’s not true. My Maths teacher tell us,” Five and five is ten.”

　　回答问题：

　　1. What’s five and five?

　　2. Is the dad right?

　　3. What does the teacher say?（石家庄小升初辅导班领导品牌威文名师教育编辑）