Question

efectuati si scrieti rezultatul sub forma fractionara: a) 2,51×0,(2) si b) 12×0,2(3)×4 1/3

Answer 1

a) 2,51 x 0,(2) = 251/100 x 2/9= simplific 2 si 100 prin 2=251/50 x 1/9 =251/450
b) 12 x 0,2(3) x 4intreg 1/3=
0,2(3) = (23-2)/90= 21/90 simplific cu 3= 7/30
4intreg 1/3 = (3x4+1)/3= 13/3
12 x 7/30 x 13/3= simplific 12 si 30 prin 6= 2 x 7/5 x13/3= 182/15