Decomposing Numbers Hands-On Math Activity

This activity is designed to help students consolidate their understanding of decomposing numbers. Students randomly choose a number between one and twenty and then create it using colored blocks on ten frames. They use two different colors to represent the whole number. Then, create a number sentence demonstrating the part, part, whole they have created in the ten frames.

Through this activity, students will show their understanding of how to break apart a whole number into two different parts.

Tips for Differentiation + Scaffolding 

A team of dedicated, experienced educators created this resource to support your math lessons. 

If you have a mixture of above and below-level learners, check out these suggestions for keeping students on track with the concepts: 

🆘 Support Struggling Students

Give students physical counting blocks and begin with a part rather than the whole.

➕ Challenge Fast Finishers

Have students who need an extra challenge create as many different combinations of parts as they can. Ask them to record each equivalent number sentence.

Easily Prepare This Resource for Your Students

Use the dropdown icon on the Download button to choose between the PDF or editable Google Slides version of this resource. 

Print on cardstock for added durability and longevity. Place all pieces in a folder or large envelope for easy access. 

This resource was created by Kendal Britnell, a teacher in Colorado and a Teach Starter collaborator.