Unit 2, Lesson 8, Grade 5 icon
Unit 2, Lesson 8

Fluently multiply multi-digit whole numbers using the standard algorithm and using estimation to check for reasonableness of the product.

EngageNY 60 min(s)

In this lesson, students use estimation to find the reasonableness of actual products. They find products of three-digit and three-digit numbers, using the standard algorithm. For example, students solve 314 x 236 by first estimating the answer to 60,000 and comparing to actual product of 74,104. Then they find products of four-digit and three-digit numbers, using the standard algorithm.

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