toate exercitile care se vad rapid
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4) 3572 =3570=3600=4000 ( zeci, sute, mii)
1757 =1760=1800=2000
6378=6380=6400=6000
9389=9390=9400=9000
5) a) 3996,4000,4004,4008,4012,4016,4020,4024
b) 8994,7884,6774,5664,4554,3444,2334,1224
6) a={0,1,2,3,4,5}
b={2,3,4,5,6,7,8,9}
Spor la treabă