Question

0.3到0.5中间有多少个两位小数？

Answer 1

19个。
在0.3到0.5之间的两位小数有19个。我们可以列举出这些两位小数：
0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49
所以，0.3到0.5之间一共有19个两位小数。

Answer 2

0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49
所以，0.3到0.5之间一共有18个两位小数。
注意：0.4不是两位小数。

Answer 3

解答:
0.31,0.32,0.33,0.34,0.35,0.36,0.37,0.38,
0.39,0.40,0.41,0.42,0.43,0.44,0.45,0.46,
0.47,0.48,0.49
共19个两位小数。

Answer 4

0.31'0.32'0.33'0.34'0.35'0.36'0.37'0.38'0.39'0.40'0.41'0.42'0.43'0.44'0.45'0.46'0.47'0.48'0.49，共19个