题目内容
0.2+0.8-0.2+0.8=0
×
×
．（判断对错）分析：按照运算顺序，直接算出结果比较即可．
解答：解：0.2+0.8-0.2+0.8
=1-0.2+0.8
=0.8+0.8
=1.6；
1.6≠0；
所以原题计算错误．
故答案为：×．
=1-0.2+0.8
=0.8+0.8
=1.6；
1.6≠0；
所以原题计算错误．
故答案为：×．
点评：小数混合运算的关键是搞清运算顺序，正确按运算顺序计算即可．
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