问题 解答题 直接写出得数3500-800=0.4×0.2=19-0.9=8÷211=204÷12=12+13=25+78=0.9+99×0.9= 答案 3500-800=27000.4×0.2=0.0819-0.9=18.18÷211=44204÷12=1712+13=5625+78=51400.9+99×0.9=90故答案为:2700,0.08,18.1,44,17,56,5140,90.