Übungen zur Kommasetzung

Welcher Satz ist jeweils korrekt?

1. I'll cook the dinner if you wash the dishes.
   I'll cook the dinner, if you wash the dishes.
2. If the weather were better we could go for a walk.
   If the weather were better, we could go for a walk.
3. If he had told me I wouldn't have asked.
   If he had told me, I wouldn't have asked.
4. I would have helped you if you had only asked me.
   I would have helped you, if you had only asked me.
5. If you see Simon ask him to ring me.
   If you see Simon, ask him to ring me.