Odpowiedź:
4 a) 15,(261) = 15,261261
b) 0,2(443) = 0,244344
c) 2,34(78) = 2,347878
d) 40,34(100) = 40,341001
5 a) 7,22222... = 7,(2)
b) 0,14666... = 0,14(6)
c) 9,343434... = 9,(34)
d) 5,100100100... = 5,(100)
e) 0,304505050... = 0,304(50)
f) 83,0344344344 = 83,0(344)
6 a) 2,13 = 2,13000
2,31 = 2,31000
2,(13) = 2,13131
2,13<2,(13)<2,31
b) 3,4 = 3,4000
3,(4) = 3,4444
3,(40) = 3,40404
3,4<3,(40)<3,(4)