Illustrative Mathematics

Level A
Unit: Numbers and Operations and Algebraic Thinking
Key Lesson 1.3.10 Addition and Subtraction with a Ten

Lesson topic: Addition and subtraction with a ten value

Instructor Materials

  • Teacher Guide
  • Slides
  • CCRS Standard: 1.NBT.2b, 1.OA.4, 1.OA.6, 1.OA.8
  • Learning goal: Find the value that makes an equation true where the total is a teen number. Use the relationship between addition and subtraction to find missing values.
  • 1.3 Assessment and Practice Problems

Student Materials

Related Lessons


If students need additional lessons before this key lesson, use these supplemental lessons.

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