Introduces the seven symbols and their values, shows how to add and subtract to make numbers. Teaches how the symbols interact and about the bar across the top

How can you have fun with Roman numerals? Convert historical dates, like MCMXLIX, from Roman numerals. Do arithmetic with Roman numerals, like the square root o

All of the clocks at the amusement park have roman numerals instead of numbers. Young readers will learn how Abby and Ben figure out how to read roman numerals

Mathematics is beautiful--and it can be fun and exciting as well as practical. Good Math is your guide to some of the most intriguing topics from two thousand y

You had better not monkey around when it comes to place value. The monkeys in this book can tell you why! As they bake the biggest banana cupcake ever, they nee