Ответ:\(3,4+2,5=5,9\).\(4,587+2,640=7,227\).\(13+6,27=19,27\).\(3,242+14,700=17,942\).\(321,0-14,9=306,1\).\(1,000-0,984=0,016\).Ответ: 5,9; 7,227; 19,27; 17,942; 306,1; 0,016.