They are called 'tire levers' or 'tire spoons'. Google either name and you get pics of same device. Do not know the history of the names. Yes, 2-3 are NORMAL. And yes I said I had to use four (4) because the tires fit so tight on the rim. That is why I said tires from HELL. And yes because I was fighting the tires so much I did pinch a tube or two.

[h=3]Wikipedia, the free encyclopedia
A tire iron (also tire lever or tire spoon) is a specialized metal tool used in working with tires. Tire irons have not been in common use for automobile tires since the shift to the use of tubeless tires in the late 1950s.[/h]