4 He's a Jolly Good Fellow

Meet the Numberjacks - extraordinary superheroes who solve mathematical problems in the real world. As you read the story, help the Numberjacks solve problems along the way!In "4 He's a Jolly Good Fellow", when the Numberjacks discover that 4s are going missing, brave Numberjack 4 is sent on a mission to solve the problem. But will Numberjack 4 escape the mean Numbertaker?