Rounding to the Nearest Ten or Hundred

Do you remember what **rounding **is? π€

That's right!Β

**Rounding** is when you find a shorter, or simpler number that's close to the number you start with.

We can round numbers to the Tens, Hundreds, or even Thousands place!

Let's review how.

Let's try an example.

Round11to the nearestTensplace

Where do we start?

The **target **digit here is the **Tens place.** It's the digit we're rounding to.

When rounding a number, we always look at the digit to the right (π) of the **target **digit.

So let's look at the **Ones **digit.

π If the Ones digit is **less than 5,** you round **down.** π

π If the Ones digit is **5 or more,** you round **up. **π

1 is less than 5, so we round down.

11 rounded to the nearestTensplace is10.

Let's practice some more!

What's43rounded to the nearestTensplace?

What's the target digit?Β

Yes, it's 4 at the **Tens place. **

So we start by looking one digit to the right (π) at **Ones place.**

What digit is in the **Ones place**?

That is right, 3! π

Since 3 is less than 5, you need to **round down**. π

This means 43 gets **rounded down** to 40.Β

Now let's try rounding even bigger numbers! πΊ

What's452rounded to the nearestHundredsplace?

The **target **digit is the **Hundreds**** ** place.

So what digit do you round up or down?

That's right! You round one digit to the right of the target.Β

π One digit to the right of the Hundreds place is the **Tens place!** π€

You're good at this. π

What digit is in the **Tens place**?

You got it, 5! π

Since the digit in the **Tens place** is 5, this means 452 gets **rounded up** to 460.

π€ **Tip:** The digits to the right of the number you round always become 0.

Great job! π

Let's try one more example.

What's949rounded to the nearestHundredsplace?

The target digit is the Hundreds. So we look at the Tens digit first.

Should we round 4 up or down?

4 is less than 5, so we round it down. π

π 949 rounded to the nearest Hundreds place is 900! β

If the digit to the right of the target place is **less than 5,** you round **down.** π

If the digit one place to the right of the target place is **5 or more,** you round **up.** π

Great work! π Now you can move on to your practice!

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