Common Core: 2nd Grade Math

This subject covers foundational math concepts for 2nd graders, including addition, subtraction, and basic problem-solving skills.

Advanced Topics

Even and Odd Numbers

Spotting Even and Odd

Every number is either even or odd. Even numbers can be split into two equal parts. Odd numbers always have one left over.

How to Tell

  • Even numbers end in 0, 2, 4, 6, or 8.
  • Odd numbers end in 1, 3, 5, 7, or 9.

Why Is This Useful?

Knowing if a number is even or odd helps you share objects, organize teams, and solve math puzzles.

Real-World Fun

When you set the table for dinner, even numbers mean everyone has a pair of forks. Odd numbers mean someone gets an extra!

Examples

  • 14 is even because it ends in 4.

  • 27 is odd because it ends in 7.

In a Nutshell

Even numbers can be split in half without leftovers; odd numbers always have one left.