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Contributor: Katie Schnabel. Lesson ID: 14131
It's a bird, it's a plane....it's Rounding Rayna! Get ready to use your superhero skills to round numbers to the nearest thousand.
Don't fear! Rounding Rayna is here!
By rounding numbers using place value, Rounding Rayna makes it easy to understand those big numbers and can save the day!
Rounding Rayna is not the only one who can round numbers. You can be a rounding hero, too!
Discover how you can make big numbers easier to understand.
Start with the number 8,964.
Say the word aloud: Eight thousand, nine hundred, sixty-four. Phew! What a mouthful.
Numbers like 10, 100, or 1000 are much easier to work with.
Begin with place value!
When a number is written out, the position of each number is very important. Where each digit is located tells you its value.
Check out a place value chart to see what each digit means.
This means there are 8 thousands, 9 hundreds, 6 tens, and 4 ones.
That is a big number! So, round it to the nearest thousand.
Remember this important rule: If the number is less than 5, round down. If it’s 5 or greater, round up.
Here’s a fun saying to help you.
If the number is 0-4, round it down to the floor. If the number is 5-9, round it up to the sky!
Write down the number 8,964 on your paper.
When rounding to the nearest thousand, look at the digit in the hundreds place, which is the number right next to the thousands place. For 8,964, that’s 9.
Since 9 is greater than 5, you round up to the sky! This means you round 8,964 up to the next thousand: 9,000.
Think about this number using a number line.
If you place 8,964 on the number line, you can see that it is much closer to 9,000 than 8,000. You rounded correctly!
Try another example.
Write the number 4,175 on your paper.
Circle the number in the thousands place.
Great! You circled the 4, which represents 4,000.
If you round this number to the nearest thousand, it could be down to 4,000 or up to 5,000.
Now, underline the number in the hundreds place.
Yes. You underlined the 1, which represents 100. Now, use your rounding saying again.
If the number is 0-4, round it down to the floor. If the number is 5-9, round it up to the sky.
Round down! Yes, this number is closer to 4,000 than it is to 5,000.
If you look at it on a number line, you can tell you made the right choice.
Now, you’re ready to practice rounding to the nearest thousand! Head to the Got It? section for fun practice problems and interactive games.
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