Lesson 16

Multipliquemos números más grandes que 20

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 whole-number and a teen number. Here, students extend this work to larger 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 larger numbers.

  • Engagement
  • MLR8

Learning Goals

Teacher Facing

  • Multiply within 100, where one factor is greater than 20.
  • Use properties based on place value and properties of operations to multiply.

Student Facing

  • Multipliquemos números que son más grandes que 20.

Required Materials

Materials to Gather

Materials to Copy

  • Number Cards (0-10)
  • Centimeter Grid Paper - Standard

Required Preparation

Activity 3:

  • Create a set of cards from the blackline master for each group of 2.

CCSS Standards

Building On

Addressing

Building Towards

Lesson Timeline

Warm-up 10 min
Activity 1 15 min
Activity 2 15 min
Activity 3 10 min
Lesson Synthesis 10 min
Cool-down 5 min

Teacher Reflection Questions

When do your students feel successful in math? How do you know?

Suggested Centers

  • Compare (1–5), Stage 3: Multiply within 100 (Addressing)
  • How Close? (1–5), Stage 5: Multiply to 100 (Addressing)

Print Formatted Materials

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Student Task Statements pdf docx
Lesson Cover Page pdf docx
Cool Down Log In
Teacher Guide Log In
Teacher Presentation Materials pdf docx
Blackline Masters zip