Rounding to the Nearest Hundred Using a Number Line

This lesson teaches how to round numbers to the nearest 100 using a number line. It explains benchmark numbers, midpoints, and common mistakes in rounding. The lesson provides examples to illustrate the concepts and concludes with a summary of the key points.

What are benchmark numbers and how do they relate to rounding?

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Explain the concept of a midpoint in relation to rounding numbers.

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How do you determine whether to round up or down when using a midpoint?

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Using the number 349, describe the rounding process to the nearest 100.

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What is the result of rounding 1,472 to the nearest 100 and why?

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