Răspuns:
Ex. 5
a) 32,7x15,6=510,12
32,7x34,8=1137,96
32,7x49,6=1621,92
510,12+1137,92=1648,04
1648,04+1621,92=3269,96
b) 13,2x18,39= 242,748
13,2x15,78=208,296
13,2x24,17=319,044
242,748+208,296=451,044
451,044-319,044=132
c) 2,49x63,79=158,8371
2,49x48,15=119,8935
2,49x5,64=14,0436
158,8371-119,8935=38,9436
38,9436-14,0436=24,9
Scuze, dar ex. 4 nu îl știu cum se face mii de scuze!!!
