Understanding Odd and Even Numbers

Which of the following numbers is considered odd?

• 22

• 15

• 12

• 20

What is a characteristic of even numbers?

• They are always prime numbers

• They end with 0, 2, 4, 6, or 8

• They cannot be divided by two

• They end with 1, 3, 5, 7, or 9

Which number is not considered even by itself?

• 10

• 30

• 0

• 20

What is the result when you add two odd numbers together?

• The result is always odd

• The result is always even

• The result is always zero

• The result is always a prime number

If you add an odd number and an even number, what will the sum be?

• The sum will be even

• The sum will be odd

• The sum will be a prime number

• The sum will be zero