a) 1,95 = 2
5,42 = 5,4
6,36 = 6,4
3,01 = 3
2,85 = 2,9
0,09 = 0,1
9,99 = 10
b) 1,653 = 1,65
2,058 = 2,06
4,455 = 4,46
0,998 = 1
7,403 = 7,4
9,009 = 9
c) 1,6537 = 1,654
9,1014 = 9,101
0,0028 = 0,003
7,2594 = 7,259
0,9999 = 1
4,1111 = 4,111
0,0005 = 0
2,00988 = 2,01
7,2304 = 7,23