This topic is in the 'Tools of Algebra' section. Just like every toolbox needs at least a hammer and screwdriver, any math class you take, starting with PreAlgebra, will require that you know how to add, subtract, multiply and divide! That's why we cover basic arithmetic in part of the 'Tools of Algebra' section. In addition, you'll find tutorials related to properties of numbers, ways of visualizing numbers on a graph, and some essential skills related to expressions and variables.