Question

1. Transforma in fractii ordinare ireductibile: a) 0,2(3); b) 0,12(3); c) 0,01(72); d) 1,2(108); e) 2,73(5).

2. Sa se transforme in fractii ordinare ireductibile: a) 0,5(4); b) 0,07(2); c) 0,21(02); d) 1,3(12); e) 2,05(7); f) 0,4(27); g) 1,0(21).
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Answer 1

Răspuns::

1.

a)0,2(3)= (23-2)/90= 21/90=7/30

b)0,12(3)= (123-12)/900=111/900=37/300

c)0,01(72)=(172-1)/990=171/990=57/330=19/110

d)1,2(108)=(12108-12)/9990=12096/9990=4032/3330=2016/1665=672/555

e)2,73(5)=(2735-273)/900=2462/900=1231/450

2.

a) 0,5(4)=(54-5)/90=49/90

b) 0,07(2)=(72-7)/900=65/900=13/180

c)0,21(02)=(2102-21)/9900=2081/9900 (2081 e nr prim)

d)1,3(12)=(1312-13)/990=1299/990=433/330

e)2,05(7)=(2057-205)/900=1852/900=926/450=463/225