With these practice-packed books, students work the problems and develop the skills necessary for a solid understanding of percents. Pre and post-tests help assess student skill levels and progress. DRILL & PRACTICE Sharpen math and reasoning skills with our Drill & Practice: Percents book! Students learn to change fractions and decimals to percents with the help of easy-to-follow, step-by-step instructions. This book features 42 pages of reproducible activities with over 400 straightforward math problems.