题目内容
0.8+0.8+0.8+0.8+0.8=
4
4
．分析：通过观察，这几个加数相同，把加法算式改为乘法算式，计算即可．
解答：解：0.8+0.8+0.8+0.8+0.8，
=0.8×5，
=4；
故答案为：4．
=0.8×5，
=4；
故答案为：4．
点评：求几个相同加数的和，用乘法计算．
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