The Cottagers are four points adrift of safety with nine matches to play, beginning at home to the Magpies, who are without Pardew for the first of seven matches due to his ban for head-butting Hull midfielder David Meyler.
"Every team has his manager beside normally, so it's not usual. It could be a chance for us. (But) always you have to take the chance," Magath said.
"Everybody makes mistakes. He was punished. That's it."
Magath has called on his players to wake up to their predicament at the bottom of the table and seize their chance against Newcastle.
"The most important thing is to win one game to give the players and the team more confidence," said Magath, who has one point from his three matches in charge.
"We didn't take the chance three times. Now we have to take the chance tomorrow in the home game against Newcastle.
"We've got the chance to take three points. If we can realise that I think we have a good chance (of survival)."
Magath targeted six wins from 12 games on his appointment, but is still chasing his first.
He believes results at Craven Cottage will be key, with the Magpies, Everton, Norwich, Hull and Crystal Palace and thinks six wins is still achievable.
He added: "Now we have five home games left. I think it is possible to win the home games and take a win from the away games too."
Magath disagreed with defender Johnny Heitinga's assessment that Fulham need a "miracle" to survive, but says the players are not accustomed to their lowly position.
"I am convinced that we can win a few games in the last nine and I don't rely on miracles or luck, I prefer to work," Magath said.
"The players are not used to a relegation fight. They are players who came from teams which were in another situation.
"The players don't get used to it, so at the moment they are not quite sure how to do it."
On-loan Aston Villa striker Darren Bent was overlooked in favour of under-21 forward Cauley Woodrow at Cardiff.
Magath added: "I'm manager for all the players. I have to give everybody his chance.
"Darren Bent had his chances, as well as the other strikers. Why shouldn't I give Cauley Woodrow another chance?
"If we do not so well I will give other players a chance to show how good they are."
Winger Ashkan Dejagah faces a fitness test to determine if he can play against Newcastle, but midfielder Giorgos Karagounis is out with a muscle strain suffered in south Wales, joining Scott Parker (knee) in the treatment room. Parker could be back for next week's match at Manchester City.
Magath added: "I think he will come back to the team for the next game."