2nd Grade Math Fun!

Being able to add and subtract 10 and 100 to a number mentally is an important skill that young students need to learn. This helps them use their understanding of place value to perform quick calculations without writing them down. Teach Starter has created a puzzle match-up set to help your 2nd-grade students determine 10 or 100 more/less than a 3-digit number.

This resource comes with the following:

• A title page with directions
• 36 puzzle cards to create 12 3-piece puzzles
• Answer key

Prior to student use, the puzzle pieces should be cut apart. Lamination is recommended to keep the pieces sturdy through student use. Students then work to match each number to its corresponding phrases. Answers can be checked using the key provided.

This activity is intended to be an engaging problem-solving task to encourage students to pay close attention to detail when calculating 10 or 100 more or less than a given number.

Tips for Differentiation + Scaffolding 

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

In addition to individual student work time, use this match-up activity to enhance learning through guided math groups or whole class 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

To provide additional support, use physical manipulatives or a hundreds chart to show how to calculate 10 or 100 more or less. Continue to emphasize the patterns seen when doing these calculations to increase student understanding.

➕ Challenge Fast Finishers

If students are ready for a challenge, consider editing the document by deleting the models. Additionally, invite students to create their own matching sets.

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. An answer key is also included with this download. 

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 Lorin Davies, a teacher in Texas and a Teach Starter Collaborator. 

Don’t stop there! We’ve got more activities and resources that cut down on lesson planning time:  

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