Skills Covered

How to Use These Worksheets

Students read each number and write it in the correct column — Odd or Even. Practice classifying numbers within 20 as odd or even.

In the Classroom

Use for math centers or independent practice. Encourage students to explain their reasoning as they sort each number into the correct column.

At Home

Practice sorting household items into pairs. If all items pair up evenly, the count is even. If one is left over, the count is odd.

Tips for Success

• Try dividing the number by 2 — if it divides evenly, it is even
• Check your last digit to decide quickly
• Use the answer key for self-checking

Common Core Standards Alignment

These worksheets support the following Common Core State Standards for Mathematics:

• 2.OA.C.3 — Determine whether a group of objects has an odd or even number of members
• 2.NBT.A.2 — Count within 1000; skip-count by 2s