a) 0,1 x 4 intregi 1/25 =1/10 x 101/25 =101/250
b)1intreg1/7 ×(1/3 + 0, 25 )=8/7×(1/3+1/4 )=8/7× (4+3)/12=8/7×7/12=8/12=2/3
c) 2/3 : (1/2 + 1/2 x 1/3 )=2/3 : (1/2 + 1/6 )=2/3 : (3+1)/6=2/3 × 6/4=1
d) 1,25 : 5/4 - 3 , (3) x 0,3 + 0 ,1(6) =5/4 : 5/4 - 30/9 x 3/10 + 15/90 =
=1 - 1 + 15/90 =1/6
e) 1/20 x ( 2,31 : 0,77)=1/20 x ( 231/100 ×100/77)=1/20 x 3 =3/20
f) ( 1 ,5 + 1/3 ) : [0.(6) + 6,(6)]=(15/10+1/3):(6/9+60/9)=(3/2+1/3) : (66 /9)=
=11/6 : 22 /3= 11/6 ×3/22=
1/4
g) ce e cu paranteza rotunda dupa numarul 0,1926
h) [ 4/3 ]²: 0,25
=16/9 :1/4
=16/9 ×4=64/9