25.48-(9.4-0.52)
=25.48-9.4+0.52
=(25.48+0.52)-9.4
=26-10+0.6
=26.6你的得数错误。25.48-(9.4-0.52)=25.48-9.4+0.52=(25.48+0.52)-9.4=26-10+0.6=16.6