Tony Bradman 
Digits: Number Jumble [PDF ebook] 

Welcome to the wonderful world of the Digits, a playful new picture book series about a group of number friends. Today, the Digits are moving into The Number Tower, but there is something odd about One’s new apartment. There are too many of everything, and the bed is SO uncomfortable One doesn’t sleep a wink. There seems to have been a mix-up with the apartments. Can the Digits get to the bottom of it? Perfect for developing number recognition skills — you can count on the Digits to make numbers fun!