Rounding Numbers to the Leading Digit Using a Number Line

This video tutorial teaches how to round numbers to the leading digit using a number line. It explains the concept of leading digits, benchmarks, and midpoints, and how they help in rounding. The tutorial also highlights common mistakes students make, such as misinterpreting increments on a number line. Practical examples are provided to demonstrate rounding numbers to the nearest benchmark, emphasizing the importance of understanding midpoints. By the end of the lesson, students will be able to round numbers accurately using these concepts.

Describe a common mistake students make when rounding numbers.

How would you round the number 342,789 to the nearest 100,000?

What steps would you take to round the number 28,012 to the leading digit?