1.
a) 1/2+1/4=
Amplificam pe 1/2 cu 2
=2/4+1/4
=3/4
b) 0,75-1/10=75/100-1/10
Amplificam pe 1/10 cu 10
=75/100-10/100
=65/100
=0,65
c)8/5×15/16=
Simplificam 8 cu 16 si 5 cu 15
=3/2
d) 2:6/5=2×5/6=10/6
Simplificam cu 2
=5/3
2.
a) (1/2)^3=1/8
b) (-0,1)^3=(-1/10)^3= -1/1000
c) (-3/5)^4:(3/5)^4=(-3/5)^0=1
d) 10^-2= 1/10^2=1/100
