妈妈买了15块饼干，娇娇吃了6块，还剩几块饼干？7B'V(C*H9V
算式：提示4M1\-t:M1T-a7H3v:T8~7B'V(C*H9V
答：还剩(r({+U3o'|+A9O+}*e9q4y7C0s块饼干。7B'V(C*H9V