Even and Odd Numbers

Even and odd numbers are two special groups of whole numbers. Even numbers can be shared into two equal parts. Odd numbers always have one left over. For example, 4 is even because it splits into two twos. But 5 is odd because one is left alone.

How to Tell Them Apart

There is an easy trick to find even and odd numbers. Just look at the last digit. If it ends in 0, 2, 4, 6, or 8, the number is even. If it ends in 1, 3, 5, 7, or 9, the number is odd. This works for numbers of any size, even millions.

Cool Number Rules

Even and odd numbers follow fun rules when you add or subtract them. Even plus even always gives an even number. Odd plus odd also gives an even number. But even plus odd gives an odd number. These patterns never change, no matter what numbers you pick.

Fun Facts

• Zero is an even number.
• Two is the only even number that is also a prime number.
• There are just as many even numbers as odd numbers.

Did You Know?

When you multiply any number by 2, the answer is always an even number.