Teach 2nd-grade students how to add three-digit numbers. Use this extension lesson to supplement your iReady Math curriculum. These ready-to-use PowerPoint and Google Slides provide additional practice related to Common Core State Standards and iReady Classroom Math questions. Click the Google Slides link, open the PowerPoint file, and increase interaction with Pear Deck or Nearpod. Review math vocabulary to help students add three-digit numbers. Check students’ responses with the included answe