问题 解答题 直接写出得数.(估算)49×301≈12×25%=12+13=4.78-2.11-0.89=5.4÷0.27=0÷1.35×4=28÷47=9×18÷9×18= 答案 49×301≈15000,12×25%=3,12+13=564.78-2.11-0.89=1.78, 5.4÷0.27=20,0÷1.35×4=0,28÷47=49,9×18÷9×18=164,故答案为:15000,3,56,1.78,20,0,49,164.