TOKYO, May 21 (Reuters) - Yields on the benchmark 10-year Japanese government bonds (JGBs) fell, tracking U.S. Treasury’s yields lower, while prices for notes with other maturities slipped as lowest biddings for the Ministry of Finance’s 20-year note auction were in line with expectations. The yield on benchmark 10-year Treasury notes fell overnight after a slow factory activity in the U.S. mid-Atlantic region in May casted a doubt on the fast-paced economic recovery. *The 10-year JGB yield fell 0.5 basis point to 0.075%. *The 20-year JGB yield rose 0.5 basis point to 0.450%. *The 30-year JGB yield rose 0.5 basis point to 0.670%. *The 40-year JGB yield rose 0.5 basis point to 0.720%. *The two-year JGB yield was unchanged at minus 0.130%. *The five-year yield was unchanged at minus 0.095%. *Benchmark 10-year JGB futures rose 0.04 point to 151.41, with a trading volume of 16,983 lots. (Reporting by Tokyo markets team; Editing by Rashmi Aich) Our Standards: The Thomson Reuters Trust Principles.