Playing 234 or 235?

I have been playing these hands cautiously if at all and wonder if I shouldn't be playing them more often. For example, 2356 has been a huge hand for me lately, cause when it hits, it tends to hit big. If I really want to see an ace, and figure my chances of flopping an ace are just under 25%, if 5 or more people are gonna see the flop then it's correct for me to call. Am I calculating that correctly?