ex2)ancercuieste numarulla care se face rotunjirea;a)la zeci 667,660,832,830,7412,7410,1728,1720,5428,5240,(670,840)7420,1730,252;b)la sute1860,1900,8659,8600,2477,2400,999,900,890,800,1800,8700,2500,1000,900;c)la mii,3041,3000,7850,7000,5193,5000,8782,8000,1860,1900,8659,8600,2477,2400,999,900,890,800,1800,8700,2500,1000,900;d)3041,3000,7850,7000,5193,5000,8792,8000,2469,2000,4000,8000,6000,9000,3000 va rog sa .a ajutati dau coroana urgent