The answer to the math worksheet "What did the policeman tell the burglar in the bathroom?" is :
"Come out with your pants up!" (Come out with your hands up!)
Want more? Get amused with loads of police jokes and more, ranging in topics from scary criminals to drunks at Aha Jokes - Police Jokes.
Students work problems in order to discover the punch line of a joke or riddle, decode a humorous poem or one-liner, create an interesting picture, etc. Thus, the solution is a built-in reward to the student when he or she completes the puzzle.
So, practice your skills with the help of this publication: Pre-Algebra with Pizzazz, authored by Steve and Janis Marcy.
Learn basic concepts on systems of linear equations using graphs at Purplemath.com.