Efectuati:

a) 0,15+0,3=........                       e) (0,8)la a2-a=............          i) 0,(8) ori 3=........... 

b) 7,2-0,83=........                         f) 3,5 ori 0,08=............           j) -1,26+1,4=............

c) (0,2) la a3-ia=...........              g) 2,59-15,7=..............          k) 1,7:0,04=.............

d) 0,25-1,3=.............                    h) 3,2:3=................                 l) 0,(5)+0,(4)=.........

                                                                                                      m) [-0,(6)] la a 2-a=...........  

                                                                                                       n) 0,2 ori 0,3=.............

                                                                                                       o) 2:0,4=..............

                                                                                                       p) 2,08-2,8=..............

                                                                                                       q) 0,6:0,3=....................

                                                                                                        r) 3,75:(-5)=................