计算下列各题:
8-(5.3-2.89)=____;19.57-2.36+1.64=____;7.78+5.67+2.22+3.33=____;
16.98-(6.98+5.89)=____;19-1.81-4.29=____.
答案
5.59,18.85,19,4.11,12.9
知识点:小数加减混合运算

略

略
