1)a)3+2*1supra5
b)5-3*1supra4
c)3supra2+3supra4*1 supra2
d)0,25:0,5*1supra4
e)1supra2+2*(0,25+3)
f)3,25-3(1,7-3supra2)
g)5 supra 2+3la puterea2*0,25
h)3supra4-(2supra5)la puterea2
i)0,(4)+(1supra3)la puterea2*5
j)0,75+0,08(3):1supra6
k)0,6+3supra5:1,2+1supra2*0,4
2)a)3,(3)+1,(3)*1supra3-4:9supra2
b)(6supra10+1supra2)*5+1supra2:(2supra5-1supra10)+2
c)12,(3)*2,25-5* 1supra2:4* 2supra5
d)(21supra10+1supra2):6supra5+6supra5-0,4
3)a)1supra3*6+4supra3*21supra28+3 1supra2* 7* 3supra5
b)(65supra195+108supra324+122supra366)*(24supra168-6supra42
c)(3* 1supra4+1*2supra7-1*17supra28)*1*15supra41
d)270supra63*(3*1supra5+7*1supra15-2*1supra3
4)a)[1supra3+1supra3:(1-1supra3)]:3supra2
b)28supra31*[1supra4+(2*1supra2-7supra4):7supra8]