The distributive axiom is the basis for the multiplication algorithm involving factors with multiple digits, and it is also the fastest way to do mental math. While it is increasingly added to elementary math texts, the coverage is often sketchy, misplaced, and poorly integrated. In addition, no obvious reason is given for learning it. This slide set is designed to help walk students through steps needed to use the distributive axiom of multiplication with respect to addition. It also covers when and why you might want to use the distributive axiom and offers practical examples that elementary students should relate to.