Arthur D. answered 08/03/14
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Here's one solution using the decimal point. If you can't use the decimal point, post it and we'll try to find another solution.
(8/0.8)*(8/0.8)*(8/0.8)*(8/8)
10*10*10*1=1000
Here's another solution without the decimal point.
8(8*8+8*8)-8-8-8
8(64+64)-8-8-8
8(128)-8-8-8
1024-8-8-8
1016-8-8
1008-8
1000