Lesson 6 Standard Algorithm: Multi-digit Numbers with Composing

    • Let’s multiply with the standard algorithm and compose new units.

Warm-up Number Talk: Three Factors

Find the value of each product mentally.

Activity 1 Compose a New Unit

Problem 1

Find the value of .

Problem 2

Lin used the standard algorithm to find the value of . Here is her work:

multiply. two hundred forty one times 23.
  1. Where do you see in Lin’s work?

  2. Where do you see in Lin’s work?

  3. What does the 1 above 241 represent in Lin’s calculation?

Problem 3

  1. Use the standard algorithm to find the value of .

  2. Use the standard algorithm to find the value of .

Activity 2 All the Products

Practice Problem

Problem 1

Find the value of using the standard algorithm.