问题 解答题 直接写出计算结果.2007+299=1-0.91=7.7÷0.01=2.8÷78-0÷1719=2-2÷7=34-23=1.25×9×8=(35+34)×20= 答案 2007+299=2306,1-0.91=0.09,7.7÷0.01=770,2.8÷78-0÷1719=3.2,2-2÷7=157,34-23=112,1.25×9×8=90,(35+34)×20=27.故答案为:2306,0.09,770,3.2,157,112,90,27.