求31.719×1.2798的整数部分。-Z'w2o6_.W,a2q*^
算式:提示:`*O/v.W3O-`0W-O9G-Z'w2o6_.W,a2q*^
答:31.719×1.2798的整数部分是'_9s9z+P4N(c/}。-Z'w2o6_.W,a2q*^