您好楼主，0.200计数单位是0.0010.20计数单位是0.012.00的计数单位是0.010.2的计数单位是0.1所以，0.200的计数单位最小（小数点后面的数位越多，计数单位就越小）望采纳，谢谢，请千万记得哦！您的采纳，对我非常的重要！
