Or you could learn about variables and do something simple to start with like this. Not that it is really needed here but it helps learn a bit about variables in formulas.

var number bedone=If([Bedroom1]>49,1,0);

var number bedtwo=If([Bedroom2]>49,1,0);

var number bedthree=If([Bedroom3]>49,1,0);

var number bedfour=If([Bedroom4]>49,1,0);

var number bedfive=If([Bedroom5]>49,1,0);

$bedone+$bedtwo+$bedthree+$bedfour+$bedfive