(well, I should clarify, because I am going to bet a lot that you don't even understand how hamas' claims really work. Hamas is not claiming Israel isn't targeting and killing hamas members. Their claim comes directly from the religion, namely that there isn't any difference between civilians and soldiers, between 3 year old girls and "what you call" terrorists (and they call mujahid), between Gazan grandmothers and leaders of hamas. That all of the above are killing Jews or dying trying, and it is just a stupid mistake of Israel not to target everyone. And no I'm not putting it badly here, if you read the hadith you will find much worse images, involving pregnant women and wombs, involving crowds beating ... Hamas says this because they see it (I'd even say "sell it", both to you and to their muslim patrons) as simply what their religion demands. Hamas is not putting out those numbers because they think this death toll on their side is terrible. They're putting out these numbers because they're proud of them, to prove they deserve more money, more support, more ... from muslims, they're putting out these numbers because they see these deaths as "the ultimate expression of muslim faith". In other words they're not claiming Israel isn't hitting hamas members, they're claiming that even if a baby was still in the womb and got hit, even that baby was convinced by hamas to fight for allah and thus was a hamas member. Of course the people actually dying don't really agree, but hamas has guns)

In other words, hamas isn't exaggerating these numbers to get a reaction from you. They're exaggerating them because it proves to their financiers how well the recruitment drive "to defend islam" is going. It should be understood as propaganda for arabic consumption. Should be understood as "look how well we're doing! Even 50.000 children are dying for our holy intifada! Send more money!".