Unit 4 - Lesson 4 - Grade 5: Illustrative Mathematics - Formative Library | Library

Instructions

Grade 5 Unit 4
Lesson 4: Standard Algorithm: One-digit and Multi-digit
CC BY 2021 Illustrative Mathematics®

Number Talk: Partial Product (Warm Up)

Find the value of each product mentally.

1

Compose with the Standard Algorithm

Here is how Han calculated 318 x 3 using partial products.

Here is how Elena calculated 318 x 3 using the standard algorithm.

1

What does the 2 in Elena’s calculation represent? Explain or show your reasoning.

1

Use the Standard Algorithm

Calculate each product using Elena’s strategy.

1