Find Benchmark Numbers Using a Number Line

This Find Benchmark Numbers Using a Number Line video also includes:

The second of eight videos on rounding whole numbers to the nearest 10 or 100 describes how to use a number line to create benchmark numbers. A review of place value and counting by 10s starts off the lesson, followed by a discussion on how to locate numbers on the line.

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CCSS: Designed
Classroom Considerations

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  • The video gives a good example to show how you can count by 10 even with three- or four-digit numbers
  • Two examples are given of how create a number line for the value 345; the first shows creating increments of 10, the second shows increments of 1

  • Text bubbles appear occasionally to reinforce what the speaker is saying; however, the text is there for such a brief period of time that it is hard to read
  • The video does not address rounding to the nearest hundred, so you may want to do a follow-up activity to discuss this concept
Common Core