Jaywardene gave the 1996 champions a flying start with an 80-ball century to help his team to a solid 332-7 before dismissing Canada for 122, taking their opening Group A match by a huge 210-run margin.
They next face 1992 champions Pakistan in a glamour match on February 26 in Colombo.
"The first game in a tournament is always very important. We started with the right tone and now we look forward to our next match against Pakistan who are a very good side," said Jayawardene.
"Pakistan have got some great individial players and we play them quite often and we know how dangerous they can be, so we have to do our homework right and prepare ourselves and go in with a very positive mindset.
"I think everyone is looking for an opportunity to play against Pakistan."
Jayawardene, whose century was the fourth fastest in the tournament's history, admitted he didn't know he had also made the quickest World Cup hundred by a Sri Lankan.
"I didn't know that until the last minu