For the first time in the successful "Monster Math" series, the lovable residents of Monstropolis focus on teaching a single math skill--multiplication!
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.