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1.8+1.8+1.8+1.8+1.8=________×________.

1.8(或5)    5(或1.8)
分析:根据乘法的意义求几个相同加数和的简便运算,可列式解答.
解答:根据乘法的意义可列式:
1.8+1.8+1.8+1.8+1.8=1.8(或5)×5(或1.8).
故答案为:1.8(或5),5(或1.8).
点评:本题考查了学生对小数乘法意义的掌握情况.
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