I am traveling with my wife and three teens. I wanted to know if anyone had any recommendations for places to eat in Amsterdam that are inexpensive and would appeal to my teens.
Two of my teens are also very interested in long-boarding. Are there any places in Amsterdam where you can rent long-boards?
Any input would be appreciated.
Thank you.

What are "longboards"?, the old fogy asked. If they are anything like skateboards, I would imaging the cobbles in Amsterdam would make life difficult.

But what do I know?

www.skateparkamsterdam.nl. It is closed until the beginning of July though.

Plenty of different food available in Amsterdam which will appeal to teens. Give them some money and let them try the Febo for instance. Not the most nutritious meal but they should like getting their food out of a wall!
Lots of Chines-Indonesian restaurants. Though different to US Chinese there will be things you recognise on the menu.

Oh and there is another skatepark at the Marnixplantsoen, which is a public park.
Try Google for more.

I doubt that you will be able to rent longboards in Amsterdam, but then again I'm no expert when it comes to skateboarding. There is a skateboarding shop in the Sarphatistraat in Amsterdam called Rodolfo's. Maybe you can contact them for some info.

As far as restaurants go; there are lots of inexpensive places that your teens may like as well. Which area will you be staying?

The web site hetismij gives has links to shops and other related websites. Have a look there first.
Also look in the Dutch Yellow pages too.
http://goudengids.nl/
What is inexpensive? Your idea will be different to mine. The cheapest is either a Mac or Burgerking or like suggested try a automatiek, for things like frikandels.

I will be staying near the Dam square and by "inexpensive" I mean under 20 U.S. dollars per person.
And I will try those suggestions about long-boards (basically a longer version of a skateboard used for cruising around, not really for tricks).
Thank you.

If you'll be getting the IAmsterdam pass for the all trams, busses and metro within the city & admission to 30 museums, there is a book that comes with it with coupons for 25% off at a nice selection of restaurants, as well as discounts on many attractions. With 2 voracious teens, that's probably a good idea for you.

The passes for free admission to 30 museums was great because we could pop in and not feel badly that we had wasted 10€ each on a museum we didn't enjoy and could quickly slip out.

In February, we used these passes and coupons every night and had lovely meals that were not over 35€ for both of us, including wine. We ate Italian, Chinese, and had great steak at a wonderful Argentinian beef restaurant.

The IAmsterdam pass also included a coupon for a free boat tour of the canals.

blaircrooke, I think it will be hard to find a decent meal under 20 dollars (around 12 euros I think?) in a restaurant. Including drinks I think it is near impossible.

You could try the Zeedijk which is not far from where you are staying. There are lots of good Asian restaurants that are inexpensive. One of my favorites is A-fusion that serves asian "tapas". Nam kee is also good (although I like the one around the corner at the Gelderse kade better) and there is also Thai Bird. Some of these places don't have the best looking interiors but if you can look past it, you'll have a good meal. They are all extremely popular and have been around for years.

You could also try the mensas from the university that serve cheap and pretty good food. This will definitely keep you within budget. There is Atrium at the law faculty at the Oudezijdsachterburgwal which looks quite nice as well (it even has a nice terrrace outdoors and a nice cafe). There is also Agora at the Roeterstraat (not as nice in my opinion).

Restaurant La place from department store V&D in the Kalverstraat serves salads and quiches and is not bad.

Hmm maybe the pancake restaurant on the Prinsengracht? I forgot the name but I'm sure other people on the forum know.

A bit further away from you is the Albert Cuyp straat where there are a lot of cheap Indian, turkish etc restaurants.

If I think of anything else I'll post.

On our first night in Amsterdam we found a little gem of a restaurant on a side canal [on Leliegracht between Prinsengraght and Keizersgraght] called Spanjer & Van Twist.

I'm quite difficult to please but it had an inexpensive menu and the food had a great home cooked taste.

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http://www.colin-julie.com/Amsterdam.htm

The website Iens (a restaurant review-site) gives the possibility to put in the budget: http://www.iens.nl/english/findARestaurant/?c=Amsterdam

If the teens can enjoy their hobby in a skateboard park, that would be most advisable. I cannot fathom 'skateboarding' through the pedestrians, cars, buses and trams, and over rough pavement as a means of 'transportation'.

ok I found something that fits your budget! Friends were talking about a restaurant called 'hap mmm' were you pay only 6 (!) euro for a full dinner.

The food is described as hearty, the way your grandmother would cook it (if she were Dutch that is Think things like dutch stamppot (kale with mashed potatoes or tournedos). Only thing I'm not sure about is if your teens will like this place. Also I haven't heard from anyone who has actually eaten there, it appears to be very popular though.

Website (in dutch):

http://www.hap-hmm.nl/index.html