Law / Old Polish money banknotes - what's their value today? [414]

We have Zlotych from 1982 -1989 in the following denominations. In looking at the responses I am confused on the exchange rate, is it 10,000 to 1?

500
1000
5000
10000
50000

Law / Old Polish money banknotes - what's their value today? [414]

My husband and I have recently aquired some old polish money banknotes and are looking for help in getting the exchange rate and the information on how these can be exchanged for US dollars.