Lesson: Estimating Sums and Differences: Four-Digit Numbers Holt Mathematics • Course 1 • Math in Focus • Singapore Math • Grade 4 • Volume A • Common Core • Math Connects • Grade 5 • Student Edition • Math Connects • Grade 4 • Student Edition • enVisionmath2.0 • Grade 4 • Volume 1 • Common Core

Mathematics

In this lesson, we will learn how to estimate sums and differences between numbers with up to four digits by rounding to the nearest ten, hundred, and thousand.