A fun book where playing with stickers helps you become a math whiz! A playful new concept for children 6 to 9.The idea is simple and original: the colorful pictures are all unfinished. In order to finish them, children must solve subtraction problems first, and then choose the stickers that fit perfectly into the design. The level of difficulty rises from page to page.This exciting book will make children enjoy math so much, they might even ask for more!