1)8:0,032=250
2)30,647:0,1=306,47
3)250+306,47=556,47
4)2,61+9,99=12,6
5)0,567:12,6=0,045
6)0,045:0,01=4,5
7)0,84:8,8=84/100*10/88=21/220
8)10-4,5=5,5
9)5,5-21/220=55/10-21/220=1210/220-21/220=1189/220
10)556,47:1189/220=55647/100*220/1189=612 117/5945=102 5727/5945