100 days of practice problems for decimals, percents, and fractions. This is not an entry level book. Students will need basic understanding of what fractions and decimals are. This book focuses on converting between fractions, decimals, and percentages. It also teaches students how to add, subtract, multiply, and divide decimals and fractions. It's a great resource for upper elementary, middle school, and early high school students (KS2, KS3).