Hi, smisar!
Try this:
=MULTIPLO.SUPERIOR(A1;SI(A1<10;0,1;SI(A1<50;0,5;1))) -----> in english: =CEILING(A1,IF(A1<10,0.1,IF(A1<50,0.5,1)))
If you have more values you'd place them in let me say worksheet Sheet2 in columns A:B and use this formula:
=CEILING(A1,VLOOKUP(A1,Sheet2!A:B,2,True)
Regards!