Răspuns :
1) 2,4= 24/10
0,13= 13/100
0,145=145/1000
2) 1,(3)= 13-1/9=12/9
4,(6)=46-4/9=42/9
15,(2)=152-15/9=137/9
6,(23)=623-6/99=617/99
7,(63)=763-7/99=756/99
0,(18)=18/99
0,(108)=108/999
5,(036)=5036-5/999=5031/999
1,2(3)=123-12/90=111/90
6,0(12)=6012-60/990=5952/990
0,01(4)=14-1/900=13/900
5,00(8)=5008-500/900=4508/900
16,40(81)=160481-1640/9900=162441/9900
0,3(102)=3102-3/9990=3090/9990
3) 11/3=3,(6)
10/7=1,428
1/6=0,1(6)
12/11=1,(09)
1/2=0,5
7/4=1,75
7/22=0,3(18)
5/7=0,714
3/14=0,214
2/5=0,4
1/8=0,125
13/20=0,65
0,13= 13/100
0,145=145/1000
2) 1,(3)= 13-1/9=12/9
4,(6)=46-4/9=42/9
15,(2)=152-15/9=137/9
6,(23)=623-6/99=617/99
7,(63)=763-7/99=756/99
0,(18)=18/99
0,(108)=108/999
5,(036)=5036-5/999=5031/999
1,2(3)=123-12/90=111/90
6,0(12)=6012-60/990=5952/990
0,01(4)=14-1/900=13/900
5,00(8)=5008-500/900=4508/900
16,40(81)=160481-1640/9900=162441/9900
0,3(102)=3102-3/9990=3090/9990
3) 11/3=3,(6)
10/7=1,428
1/6=0,1(6)
12/11=1,(09)
1/2=0,5
7/4=1,75
7/22=0,3(18)
5/7=0,714
3/14=0,214
2/5=0,4
1/8=0,125
13/20=0,65