Double Your Fun (MATHmatazz, This is a PAWS book, Children's Television Network)

Description

C.J. and Annie's favorite store is having a 2-for-1 sale! For each toy they buy at the Silly Shop today, they get another one free. That's easy to figure out when they buy one toy, but what happens when they buy 3 or 4 or 5? Help C.J. and Annie add up their purchases so that the double-fun sale doesn't give them double trouble! - from Amzon