【正文】
? It’s seven. 7 + 3+6 =? What’s three plus six? It’s nine. 9 + 1+4 3+6 2+5 one plus four two plus five three plus six Practice: A: What’s … plus…? B: It’s … A:What’s five plus two? 5 + 2 = ? B:It’s seven . ? A: That’s right. 7 十 Questions: ? A: What’s eight plus five? 8