丁丁用5分钟做了85道口算题，做同样的题目，东东4分钟做了64道，谁做得快？6p;O/F(S(|7N4i(@9r
算式：提示'r*T*W*j1Y)J/L6p;O/F(S(|7N4i(@9r
答：7},z1R9T(D3c)i:z(['|4?;V5t做的快。6p;O/F(S(|7N4i(@9r