How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/18100.0*Average seed
Flamengo 1 Palmeiras 1 -0.4
Fluminense 0 Cruzeiro 2 -0.2
Bahia 1 Ponte Preta 0 +0.2
Sao Paulo 2 Nautico 1 +0.2
Inter 0 Corinthians 2 +0.0
Week of 11/25100.0*Average seed
Ponte Preta 0 Sao Paulo 0 +0.1
Inter 0 Portuguesa 2 +0.1
Bahia 1 Nautico 1 +0.1
Cruzeiro 2 Coritiba 1 -0.0
Week of 12/1100.0*Average seed
Flamengo 2 Botafogo 2 -0.4
Portuguesa 0 Ponte Preta 0 +0.4
Santos 3 Palmeiras 1 -0.2
Points
Chance Will Win Championship