What's odd about the number 3? In this movie, you’ll learn about even and odd numbers. An even number as a number that can be divided into two equal groups with no leftovers. The numbers 2, 4, 6, 8, and 10 are all even numbers. An odd number cannot be divided into two equal groups without leftovers. The numbers 1, 3, 5, 7, and 9 are all odd numbers. In this movie, you’ll explore what happens when you add or subtract even or odd numbers. Is zero an even or odd number? What do you think?