Math.U.See Pre-AlgebraMath. U. See Pre Algebra Negative numbers, order of operations, solving for the unknown, and other topics. Major Concepts and Skills Include: Fluently adding, subtracting, multiplying, and dividing positive and negative numbers Understanding and simplifying exponents Using properties of operations, order of operations, and absolute value Expanding understanding of place value Evaluating radicals Identifying the least common multiple and greatest