Provide engaging math practice and see children's math and problem-solving skills improve with Skill Sharpeners: Math activity books! The colorful theme-based activities create enjoyable learning experiences for children and improve their math fluency, number sense, and reasoning skills. Completely updated to reflect grade-level standards, the new Skill Sharpeners: Math books are ideal for enrichment, for review, and to help students master "must-know" skills such as: addition subtraction place value multiplication fractions geometry logical thinking algebra and more Each grade level incorporates the perfect amount of math skill practice and includes word problems that challenge children to apply their understanding. Engaging theme-based units capture children's interest with colorful visuals to help them solve problems. Each title includes: Rigorous math skill practice that reflects current standards New themed units that present math practice in a fun, colorful format A downloadable teaching guide that provides teaching tips and support for struggling children A "Test Your Skills" page at the end of each unit that lets students review the skills practiced in that unit All-new artwork that engages children with age-appropriate illustrations Skill Sharpeners: Math, grade 4 provides practice for the following skills: add, subtract, multiply, and divide multi-digit numbers divide with remainders add and subtract decimals compose and decompose numbers analyze and extend patterns time intervals logical thinking convert measurement estimate weight, length, capacity, and time round large numbers compare decimals compare and sequence numbers to 10,000 describe shapes by types of lines and angles find factors and multiples Answer key included. Every Skill Sharpeners workbook now includes a free downloadable Teaching Guide! The Skill Sharpeners: Math Teaching Guides include: How to Use directions for teaching math Sample pacing guide to complete lessons and activities Teaching suggestions for helping children learn in different modalities Extension activities that include math journals and problem solving Visual aids to help children understand difficult math strategies About Evan-Moor A leader in PreK-8 educational publishing, Evan-Moor has been a trusted partner of teachers and parents for over 40 years. Our mission is helping children learn and we do this by creating resources that motivate children to learn important skills and concepts across the