老师拿出15颗小红星，每人奖2颗，还余1颗，老师奖给了几个小朋友？1^5J8`2c3|7H:d
算式：提示,@,t(}1a*[;e0o7v0m,w.Y1j/q9h/s*g.}1^5J8`2c3|7H:d
答：老师奖给了:W:W.r2w)w个小朋友。1^5J8`2c3|7H:d