Question

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)=................

Answer 1

Aici cand ai un numar 0,15 si altul 0,3 adaugi numarul de zecimale la 0,3 in cat sa iti dea numarul de zecimale de la 0,15 deci o sa rezulte 0,30
0,15 + 0,30 = 0,45
7,20-0,83=6,37
0,2x0,2x0,2 calculezi si tu ca numai folosesc calculatoru
0,25-1,30=-0,95
0,8x0,8
35/10 inmultit cu 8/100 e mai usor sa le faci asa
si restu cred ca ai prins ideea