How much to charge?

How much would one charge for making a 10 min long video for a school to show parents a run through of a day in school??
Do I charge per minute?
How much?

And for a wedding invitation about 1 minute long?
But taking a lot of time to create?

Lets start with the 10 min long video: are they providing you with all the material? is it more slideshow or are you creating a video with all the different elements?

They are providing me with videos and pictures of the kids
I have to choose what i would like to use cute and add cute animations and moving elements like scissors opening etc…