Real math help.
How Do You Round a Decimal Using a Number Line?
Note:
Rounding is an important part of math! In this tutorial, you'll see how to use a number line to help you round a decimal to a chosen place value.
Background Tutorials
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Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left.
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What is Place Value?
Did you know numbers have place values? This tutorial introduces you to the term place value and shows you some of the most seen place values. Take a look!
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Recognize opposite signs of numbers as indicating locations on opposite sides of 0 on the number line; recognize that the opposite of the opposite of a number is the number itself, e.g., -(-3) = 3, and that 0 is its own opposite.
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What is the Number Line?
A number line is a way we can visually represent numbers. This tutorial gives you a great introduction to the number line and shows you how to graph numbers on the number line in order to compare them. Check it out!
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Further Exploration
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Use place value understanding to round decimals to any place.
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How Do You Round a Decimal to a Given Place Value?
Sometimes, decimals are so long that you need a way to estimate the value of the decimal. Other times, you may only need a certain amount of exactness to get your answer. This is where rounding decimals to a chosen place can be very helpful! Watch this tutorial to learn how to round a decimal to a chosen place.
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