Which numbers are even and which are odd? Discuss.
Even Numbers: Even numbers are those that can be divided into two equal groups or arranged in complete pairs. Examples: 2, 4, 6, 8, 10, 12... Even numbers end with 0, 2, 4, 6, or 8.
Odd Numbers: Odd numbers are those that cannot be divided equally into two groups — one always remains alone. Examples: 1, 3, 5, 7, 9, 11... Odd numbers end with 1, 3, 5, 7, or 9.
Explanation
The chapter encourages class discussion about the characteristics of even and odd numbers. Students can observe that even numbers end in 0, 2, 4, 6, or 8, while odd numbers end in 1, 3, 5, 7, or 9. The pairing arrangement helps visualize the difference.
Solution Steps
Even numbers can be divided into two equal groups or arranged in complete pairs.
Examples of even numbers: 2, 4, 6, 8, 10, 12...
Even numbers end with digits 0, 2, 4, 6, or 8.
Odd numbers cannot be divided equally into two groups — one always remains alone.
Examples of odd numbers: 1, 3, 5, 7, 9, 11...
Odd numbers end with digits 1, 3, 5, 7, or 9.