you cant
There are hidden exits on some levels, and when completed, will open up the warp cannon. Warp cannons will transport you 4 worlds ahead, for example, the warp cannon in world 1 will transport you to world 5.
On 2-3 hit the water switch and go to the coin section and there is another switch hit it also if you want to skip to the big castle at the end of the world you do 2A and you have to end with firworks, then you have to go through a pipe and your there! =]
you can unlock a level with a pipe and cannon around it (i got it on a red flag on world 2 number 4 ) and finish that on a cheat flag( the yellow pipe above the other 1). this will unlock the cannon.
You Have To Get Into A Golden Tube On World 2-A
you cant
There are hidden exits on some levels, and when completed, will open up the warp cannon. Warp cannons will transport you 4 worlds ahead, for example, the warp cannon in world 1 will transport you to world 5.
You have to find a time warp pipe in w 2-4
Easy! Take a secret exit from: World 1 Tower or World 2 Tower and get in the canon, and blast to world 5. Take a secret exit from World 5 Ghost House to get to world 8.
take a warp pipe in 1-2 and then warp vine in 4-2 that will take you to world 8
you have to finish the level
On 2-3 hit the water switch and go to the coin section and there is another switch hit it also if you want to skip to the big castle at the end of the world you do 2A and you have to end with firworks, then you have to go through a pipe and your there! =]
Hack the program
Out ofa cannon
you have to get the red flag on level 3 and then you will a secret level and if you get the red flag on the sercret level ole you will have the cannon but it will not take to world 7 it will take you world 5 the way to get the real world 7 cannon is in wolrd 4
when you get the room open that has the cannon locked inside you must turn into a wolf and warp it and yourself to lake hylia, when you get to lake hylia turn human and talk to fayer the guy that owns the amusment riding cannon but you must pay him 300 rupees in return,when hes done you can get your clawshot shoot the pannel in the back of the cannon and it will now shoot you into the sky world.
NSMB2's two warp cannons are in world 1 and world 3. Both can be found via secret exits in both world's towers. In world 1's tower, go through the door near the checkpoint flag. This will take you to a room with moving green blocks and a coin roulette block. Wait by the right wall for the green blocks to open a gap in the wall, then jump through it. Go through the door on the other side to find the secret exit flag. In world 3's tower, about a quarter of the way through the level there is a mini pipe. Enter this pipe as mini mario, then make it to the top of the next room to find the secret exit flag here. World 1's warp cannon leads to the mushroom world, and world 3's cannon leads to the flower world.