Lesson 4

Algoritmo estándar: Números de un dígito y de varios dígitos, componiendo

Lesson Purpose

The purpose of this lesson is for students to use the standard algorithm to multiply up to five-digit numbers and one-digit numbers.

Lesson Narrative

In grade 4, students interpreted the standard algorithm for multiplication and compared it to a partial products algorithm to multiply up to four-digit numbers and one-digit numbers. In this lesson, students extend their understanding of the standard algorithm to multiply up to five-digit numbers and one-digit numbers, including problems where one or more new units are composed. This is the first in a series of lessons to support students in developing fluency using the standard algorithm to multiply multi-digit numbers.

  • Representation

Learning Goals

Teacher Facing

  • Use the standard algorithm to multiply up to five-digit numbers by one-digit factors, including composing new units.

Student Facing

  • Usemos el algoritmo estándar para multiplicar números de un dígito y números de varios dígitos.

Required Preparation

CCSS Standards

Addressing

Lesson Timeline

Warm-up 10 min
Activity 1 20 min
Activity 2 15 min
Lesson Synthesis 10 min
Cool-down 5 min

Teacher Reflection Questions

What evidence do you see that your students are applying what they learned about partial products to make sense of the standard algorithm?

Suggested Centers

  • Number Puzzles: Multiplication and Division (4–5), Stage 2: Multi-digit Factors (Addressing)

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