1)1/3*√54+0.5√24-02√150=1/3*3√6+0.5-2√6-0.2*5√6=√6+√6-1√6=√6+√6-√6=√6
2.44949
2)3√1/5+0.5√20-5/8*√64/5-√3=3*√1/√5+0.5*2√5-5√64/5/8-√3=3*1/√5+√5-5*√64/√5/8-√3=3/√5+√5-5*8/√5/8-√3=3√5/5+√5-40/√5/8-√3=3√5/5+√5-40/√5*8-√3=3√5+√5-5/√5-√3=3√5/5+√5-5√5/5-3=3√5/5+√5-√5-√3=3√5/5+√5-√5-√3=3√5/5-√3
0.39041
3)√18-√27+0.5√48-5√50=3√2-3√3+0.5*4√3-5*5√2=3√2-3√3+2√3-25√2= -22√2-√3
-32.8447
4)0.2√300-2√0.08+4√3-0.4√200=0.2*10√3-2√8/100+4√3-0.4*10√2=2√3-2*√2/25+4√3-4√2=2√3-2*√2/√25+4√3-4√2=2√3-2*√2/5+4√3-4√2=2√3-2√2/5+4√3-4√2=6√3+-2√2-20√2/5=6√3+ -22√2/5
4.16977