a)
0,2+0,5-1/3=
2/10+5/10-1/3=
1/5+5/10-1/3=
6/30+15/30-10/30=
21/30-10/30=11/30
b)
0,2-0,1(6)+0,5=
2/10-(16-1)/90+5/10=
18/90-15/90+45/90=
3/90+45/90=48/90=24/45
c)
0,25-1/7+0,2=
25/100-1/7+2/10=
1/4-1/7+2/10=
35/140-20/140+28/140=
15/140+28/140=53/140
d)
0,5+1,4*(2/3+1/6)
5/10+14/10*(4/6+1/6)
1/2+7/5*5/6
1/2+7/6
3/6+7/6=10/6=5/3
e)
0,6*(2/3)^2:2/5
6/10*4/9*5/2
3/5*4/9*5/2
12/45*5/2=60/90=2/3
f)
(2/3+1/6):7/3+0,4
(4/6+1/6)*3/7+4/10
5/6*3/7+2/5
15/42+2/5
5/14+2/5
25/70+28/70=53/70
h)
6/7*0,(6):2^3/2*3+1
6/7*6/9:8/7
36/63*7/8
288/9=32
g)
(1/2)^3:(1/2)^2+(1/2)^2-0,25:2
1/8*4/1+1/4-25/100*1/2
4/8+1,4-1/4*1/2
1/4+1,4-1/8
2/4-1/8
4/8-1/8=3/8
