问题 解答题 516-278=406×3=612÷6=26+998=65×28=556÷9= 答案 516-278=238,406×3=1218,612÷6=102,26+998=1024,65×28=1820,556÷9=61…7.故答案为:238,1218,102,1024,1820,61…7.