7.856精确到百分位是( ),精确到十分位是( ),精确到个位是(   ).

问题描述:

7.856精确到百分位是( ),精确到十分位是( ),精确到个位是(   ).

7.856精确到百分位是(7.85 ),精确到十分位是(7.8 ),精确到个位是( 7  )