Question

Scrieri sub vorba de fr ordinara
A) 2,(5) 13,(7). 125,(8) 0,(29) 4,(37) 125,(106) 28, (471).

B) 0,2(7) 4,6(5). 8,23(7). 16,14(35) 200,79(125)

Answer 1

A)
2,(5)=25-2/9= 23/9
13,(7)= 137-13/9=124/9
125,(8) = 1258-125/9= 1133/9
0,(29) =29/99
4,(37)= 437-4/99=433/9
125,(106) = 125106-125/999= 124981/999
28, (471)= 28471-28/999= 28443/999

B)
0,2(7)= 27-2/90= 25/90
4,6(5)= 465-46/90 = 419/90
8,23(7)= 8237-823/900= 7414/900
16,14(35) = =161435-1614 /900= 159821/9900
200,79(125)=20079125-20079/99900= 20059046/99900

Answer 2

2,(5)=25-2/9
paranteza =preioada=9   ...cate cifre sunt in perioada atati de 9 avem la numitor
13,(7)=137-13/9
125,(8)=1258-125/9
0,(29)=29-0/99
4,(37)=437-4/99
125,(106)=125106-125/999
28,(471)=28471-28/999=28443/999
0,2(7)=27-2/90
se pune intai perioada=9,si nr dupa virgula =0
4,6(5)=456-46/90
8,23(7)=8237-823/900
16,14(35)=161435-1614/9900
200,79(125)=20079125-20079/99900