5 5 5 5 5 =105
5 5 5 5 5 =500
5 5 5 5 5 =10
5 5 5 5 5 =220
(5*5-5)*5+5=20*5+5=105
(5+5)*5(5+5)=10*5*10=500
5*5-(5+5+5)=25-15=10
55*(5-5:5)=55*4=220