Join the crew of the M.S. Number Line as they explore the mysterious Planet of the Decimals! Through their journey, readers will learn about what decimals represent, decimal models, place value, rounding, fractions, and adding, subtracting, multiplying, and dividing decimals. Colorful characters and a graphicnovel format help to hook readers and explain mathematical concepts. Students are invited to test their knowledge with questions throughout the text and can check their answers with the handy key at the back of the book. For more content on mathematics, check out other titles in the Building Blocks of Math series!