Question

Vă rog ajutați mă și pe mine cu tema la mate
PE 8 ŞI PE 9

Answer 1

8. a) 1,2=12/10=6/5
0,(25)=25/99
4,(2)=(42-4)/9=38/9
1,5(2)=(152-15)/90=137/90
0,25=25/100=1/4
7,(14)=(714-7)/99=707/99
7,14=714/100=357/50
7,1(4)=(714-71)/90=643/90
b) 1,2(5)=(125-12)/90=113/90
2,1(26)=(2126-21)/990=2105/990=421/198
1,12=112/100=28/25
0,(627)=627/999=209/333
c) 1,5=15/10=3/2
2,(15)=(215-2)/99=213/99=71/33
0,1(3)=(13-1)/90=12/90=2/15
4,2(7)=(427-42)/90=385/90=77/18

9.a) 0,13=13/100
5,16=516/100
5,1(6)=(516-51)/90=465/90
5,(16)=(516-5)/99=511/99
0,045=45/1000
0,0(45)=45/990
0,(045)=45/999
1,135=1135/1000
1,1(35)=(1135-11)/990=1124/990
1,(135)=(1135-1)/999=1134/999
1,13(5)=(1135-113)/900=1022/900
b) 0,(12)=12/99
3,(126)=(3126-3)/999=3123/999
0,1(3)=(13-1)/90=12/90
0,5(123)=(5123-5)/9990=5118/9990
c) 0,(18)=18/99
1,1(6)=(116-1)/90=115/90
0,15(03)=(1503-15)/9900=1488/9900
0,002(13)=(213-3)/99000=210/99000
d) 0,(5)=5/9
1,1(455)=(11455-11)/9990=11444/9990
0,(135)=135/999
12,2(324)=(122324-122)/9990=122202/9990