а) \(78.8-49.9=28.9\); б) \(93.44-92.86=0.58\); в) \(80.3-6.62=73.68\); г) \(81-8.946=72.054\); д) \(65.38-2.1795=63.2005\); е) \(60.006-39.28=20.726\).
Ответ: 28.9; 0.58; 73.68; 72.054; 63.2005; 20.726.