题目: 直接写出得数.998+889=380-279=5.9-0.89=15+0.5=0÷558=0.25×4=1÷0.125=27-727= 答案: 998+889=1887,380-279=101,5.9-0.89=5.01,15+0.5=0.7,0÷558=0,0.25×4=1,1÷0.125=8,27-727=1957.