把一个数的小数点向右移动两位后,得到的数比原来大19.8,原来的数是______.
人气:445 ℃ 时间:2020-04-15 05:02:55
解答
19.8÷(100-1),
=19.8÷99,
=0.2,
答:原来的小数是0.2.
故答案为:0.2.
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