Description Over 4,000 problems help develop the Pre-Algebra skills needed to tackle word problems, create math equations and compute with fractions, decimals and integers. Solve computation problems using decimals, integers and rational numbers. Solve word problems that relate to everyday situations. Understand ratios, proportions and percents. Translate mathematical expressions. Apply order of operations. This solution also allows you to create mathematical equations, manipulate positive and negative numbers, estimate to solve problems and think logically.