$8,3+6,11 = $  

$727,09-16,09 = $  

$1,08+5,92 = $  

$2,93-2,86 = $  

$207,27+44,1 = $  

$34,7-32,1 = $  

$68,2+21,65+425,33 = $  

$9,7-5,34 = $  

$8,2-6,2 = $  

$5,1+3,627+1,26 = $