1.26868…是______小数，可以简写成______，这个数小数点后第50位上的数字是______．
（1）1.26868…是一个循环小数，可以简写成：1.2
；•• 68
（2）1.26868…循环节为68，共2位，此小数又是混循环小数，就是说小数点后面第二位每2位数一个循环．
所以用50-1=49，
再用49÷2=24…1，
就是说第50位数是循环节的第一个数，即是6．
故答案为：循环，1.2
；6．•• 68
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| Jay Chou was born 1 January 18, 1979. he was born in Taiwan, China. He 2 with his mother, and was a quiet and shy kid. He didn't do 3 in study. As a small child, Jay was very 4 in music. His mother took him to learn the piano when he was only three years old. He loved it and practiced 5 a lot. When he was in high school, he played the piano very well and he showed his talent (天才) for 6 songs. Before a singer, he 7 as a songwriter. For two years, he 8 most of time writing songs for singers. Now Jay is one of the famous 9 in Asia (亚洲). But he is shy and doesn't smile often. He isn't good-looking and doesn't speak clearly when he sings and talks, but he has a lot of fans and they like him 10 he is really good at music and doesn't copy others. | ||||
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