$25,3-12,1=$  

(a)  

 $21-6,3=$  

(a)  

 $0,85+2,3=$  

(a)  

 $0,5+12,123-4,5=$  

(a)  

 $12,89-2=$  

(a)  

 $10-0,1-0,01=$  

(a)  

 $124,3514+1,25=$  

(a)  

 $3,6+2,4=$  

(a)