"There are a few things we can learn. Bowling a better line and length is important and when we bat partnerships are important and we shouldn’t’ panic," added the skipper, who scored 49 against Pakistan.
The top four teams from each group will qualify for the quarter-finals and Sangakkara stressed the need to keep improving as the tournament progresses.
"We are just going to keep preparing and keep playing as best we know how. There's a long way to go in this tournament so we just have got to keep plugging on and make sure that we perform as well as we can," said Sangakkara.
Sri Lanka, who beat Canada in their opener by a huge 210-run margin, restricted Pakistan to 277-7 after their opponents looked set for a 300-plus total but wasted a good start when they batted, losing wickets at regular intervals.
Sangakkara said spearhead L