20.
a)43:6=7,1666... =>43/6 = 7,1(6)
42
____
=10
6
_____
40
36
_____
=40 ...
b)Dupa acelasi model se obtine 4,58(3)
c)0,8(6)
d)5,1(6)
e)1,3(8)
f)2,1(3)
g)6,08(3)
h)1,458(3)
21.
9:7=1,285714285...->6
7
_
20
14
__
=60
56
___
==40
35
____
===50
49
_____
====10
7
______
=====30
28
_______
======20
14
_________
=======60
56
__________
========40
35
___________
=========5........
22.
Scuze, dar imi ia prea mult timp s-o gandesc... Voi reveni cand ii dau de cap...
