Unit 4, Lesson 16
Multiply Numbers Greater than 20
Grade 3
Preparation
Lesson Purpose
The purpose of this lesson is for students to multiply within 100, where one factor is greater than 20.
Lesson Narrative
Previously, students have used strategies based on place value and properties of operations to find products of a one-digit number and a teen number. Here, students extend this work to greater two-digit numbers. Students first analyze different strategies and then apply one or more of them to find the value of other products. The lesson also includes an optional game students can play to apply what they’ve learned to multiply greater numbers.
- Engagement
- MLR8
- Explain (orally) strategies for multiplying within 100, where one factor is greater than 20, including strategies based on place value and properties of operations.
- Interpret (orally) base-ten diagrams and area diagrams that represent multiplication within 100, where one factor is greater than 20.
- Let’s multiply numbers that are greater than 20.
Required Preparation
Activity 3
- Create a set of cards from the blackline master for each group of 2.
Teacher Reflection Questions
When do your students feel successful in math? How do you know?
Have a correction or suggestion?
Tell us about a typo, a broken link, or an improvement you’d like to see. We read every submission but can’t reply.
Have a question or need support instead? Visit our Contact Us page to reach our team.