\documentclass[a4paper]{article}
\usepackage[english]{babel}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage[colorinlistoftodos]{todonotes}
\title{Base 16}
\begin{document}
\maketitle
$$1_{16} = 1_{10}$$
$$2_{16} = 2_{10}$$
$$3_{16} = 3_{10}$$
$$4_{16} = 4_{10}$$
$$5_{16} = 5_{10}$$
$$6_{16} = 6_{10}$$
$$7_{16} = 7_{10}$$
$$8_{16} = 8_{10}$$
$$9_{16} = 9_{10}$$
$$A_{16} = 10_{10}$$
$$B_{16} = 11_{10}$$
$$C_{16} = 12_{10}$$
$$D_{16} = 13_{10}$$
$$E_{16} = 14_{10}$$
$$F_{16} = 15_{10}$$
$$10_{16} = 16_{10}$$
\end{document}
