Here are a few from my fiance (kindergarten teacher)
Why was six afraid of seven? Because seven ate nine! (7 8 9)
What did zero say to eight? Nice belt.
What's orange and sounds like a parrot? A carrot!
And some Halloween jokes:
Why couldn't the ghost have kids? He had a hollow-weenie.
Why don't skeletons like parties? They have no body to dance with!
Why do witches ride on brooms? Because vacuum cleaners are too heavy!
Where do ghosts go out? Wherever they can get sheet-faced!




