在一个小数里,小数部分有相同的数字出现就是循环小数对吗

2025-03-15 14:49:06
推荐回答(4个)
回答1:

一个数的小数部分,从某位起,一个数字或者几个数字重复出现,这样的小数叫做循环小数;所以在一个小数里,小数部分有相同数字出现的就是循环小数,这种说法是错误的,应该是一直出现才是循环小数,如果是1.222,后面没有其他数了,那这个也不叫循环小数,只有1.2222……这样一直下去,才叫循环小数,不知道你懂没懂

回答2:

答:不能这样说。
应该说,在一个小数里,不考虑小数点,如果有周期性循环出现的数字组合且周期无限,就是无限循环小数。
比如:10/7=1.42857142857142857......; 142857在得数中周期性地循环出现,并且周期无限,这就是无限循环小数。

回答3:

在一个小数里,小数部分有相同的数字出现就是循环小数是不对的,应该是相同的循环节,如10/3=3.33333.... 循环节是3,又如10/7=1.42857142857...... 循环节是142857。

回答4:

当然不是,循环小数一定是无限的,而比如0.11虽然出现了两个1,但它是有限小数所以不是循环的。

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