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Rounding Numbers

Rounding Numbers

Author: Rachel Casto

I can round multi-digit whole numbers to any place using my knowledge of place value.

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Key Vocabulary

place value-the value of where a digit is in a number
     **4th grade expectation-->ones, tens, hundreds, thousands, ten thousands, hundred thousands, millions

rounding-reducing the digits in a number while trying to keep its value similar; you round to a specific place value  (Example:  46 rounded to the nearest ten is 50 because 46 is closer to 50 than 40)

Below you will find resources to help students round whole numbers to various place values.

Using a Number Line
(Source: Khan Academy)

Using Place Value
(Source: Khan Academy)

Using Place Value
(Source: Khan Academy)

Estimating Whole Numbers
(Source:  StudyJams)

​Locate Benchmark Numbers on Number Line
(Source:  Learn Zillion)

Round to Leading Digit Using Number Line
(Source:  Learn Zillion)

Round to Specified Place On a Number Line
(Source:  Learn Zillion)

Rounding in Real Life Situations
(Source: Learn Zillion)

Rounding Rules


Rounding to Tens and Hundreds


Rounding to Thousands


Rounding to Millions