Rounding Numbers

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Taught by muchomath
  • Currently 4.0/5 Stars.
6544 views | 3 ratings
Meets NCTM Standards:
Lesson Summary:

In this lesson on rounding numbers, Professor Perez demonstrates how to round numbers on a number line and how to describe the process using words. Starting with rounding to the nearest 10, then 100, and finally 10,000, Professor Perez highlights the importance of identifying the digit in the place being rounded to and looking at the next digit to determine whether to round up or leave it as is. With helpful examples and explanations, this lesson is perfect for students looking to improve their rounding skills.

Lesson Description:

Rounding numbers with and without a number line.

Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.

Questions answered by this video:
  • How do you round numbers?
  • How do you round numbers to the nearest 10 on a number line?
  • How do you round to the nearest hundred?
  • How do you know which way to round if a number ends in 5?
  • How do you round very large numbers to the nearest 10 or 100?
  • Staff Review

    • Currently 3.0/5 Stars.
    This video explains rounding numbers both with and without a number line. It starts off with rounding numbers to the nearest 10 and then to the nearest 100. Many different examples are used in this video. Some very large numbers are used near the end.