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# Maths

__07.01.21__

Today we are going to look at rounding numbers to the nearest 100.

When rounding to the nearest 100 we need to follow a few simple rules.

**Rules:**

**Find the nearest hundred below the number****Find the nearest hundred above the number****Look at the Tens column to help us work whether we round above or below.**

**Key To Rounding (rule 3)!! **

**If the number in the column you are looking at is:**

**1,2,3 or 4 you round DOWN**

**5,6,7,8,9 you round UP**

Lets have a look at this with a few examples.

Lets start with the number

213

**Step 1**

**Find the nearest hundred below the number**

So, what is the nearest 100 below 213?

Remember hundreds end in 00

The nearest hundred below 213 is **200 **

**Step 2**

**Find the nearest hundred above the number**

Now, what is the nearest 100 above 213?

The nearest hundred above 213 is **300 **

**Step 3**

**Look at the Tens column to help us work whether we round above or below.**

Finally we look at the tens column

213

What number is in the tens column?

**1**

**Remember, if the number in the column you are looking at is:**

**1,2,3 or 4 you round DOWN**

**5,6,7,8,9 you round UP**

So we would need to round to the lower hundred which will be** 200.**

**Lets try another question**

584

**Step 1**

**Find the nearest hundred below the number**

So, what is the nearest 100 below 584?

The nearest hundred below 213 is **500 **

**Step 2**

**Find the nearest hundred above the number**

Now, what is the nearest 100 above 584?

The nearest hundred above 213 is **600 **

**Step 3**

**Look at the Tens column to help us work whether we round above or below.**

Finally we look at the tens column

213

What number is in the tens column?

**8**

**Remember, if the number in the column you are looking at is:**

**1,2,3 or 4 you round DOWN**

**5,6,7,8,9 you round UP**

So we would need to round to the lower hundred which will be** 600.**

**In your books have a go at rounding the following 6 numbers to the nearest 100.**

**464****892****375****632****147****559**

**Now go onto Purple mash and complete the 2do for maths.**

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