Odd and Even Numbers Worksheets Within 20

Use the worked example and teaching sequence below to explain the reasoning before independent practice.

Use New Numbers to make another set. Choose Worksheet or Answer Key, then use the worksheet’s Print button.

Teaching Notes

Use the worked example and teaching sequence below to explain the reasoning before independent practice.

Before You Begin

Make pairs of objects.

Teaching Steps for Parents and Teachers

Group the objects into pairs.
If none are left, the number is even.
If one is left, the number is odd.

Worked Examples

Is 13 odd or even?

6 pairs use 12 objects.
1 object is left.

Answer: Odd

Common Mistakes and How to Help

An odd number leaves one unpaired object, not an incomplete pair counted as a full pair.

Can you show 13 as 2 × 6 + 1?

Questions to Check Understanding

Can you show 13 as 2 × 6 + 1?
What in the numbers or diagram supports your answer?

Practice Advice

Work through the example together. Ask the learner to explain the first two problems, then try three independently. Review the first incorrect step before assigning more practice.

Next Practice

Use New Numbers to practice the same skill with different values.
If the learner needs help, return to the example and model each step before trying again.