# Rounding off numbers

## Rounding off numbers to the nearest 10 ( Tens ).

**(1) For rounding off numbers to the nearest tens. we will first check if the ones digit is greater than or lesser than 5.**

**(2) If the one’s digit is greater than 5, we will increase tens digit by 1, and replace ones digit by 0.**

**(3) If one’s digit is lesser than 5, we will replace ones digit by 0, and other digits remain same.**

#### Rounding off numbers to the nearest 10 – **Question 1**

Round off the given digit to the nearest ten.

49

**Explanation**

In, present case,

49 has the number 9 in ones place

Since,

9 > 5

Hence, the required rounded number = 50

#### Rounding off numbers to the nearest 10 – **Question 2**

Round off the given digit to the nearest ten.

53

**Explanation**

In, present case,

53 has the number 3 in ones place

Since,

3 < 5

Hence, the required rounded number = 50

## Rounding off numbers to the nearest 100 ( Hundreds )

**(1) In order to rounding off numbers to the nearest hundreds we will first check if the tens digit is greater than or lesser than 5**

**(2) If the ten’s digit is greater than 5, we will increase hundreds digit by 1 and replace tens or ones digit by 0. **

**(3) If the ten’s digit is lesser than 5, we will replace tens or ones digit by 0, and other digits remain same. **

#### Rounding off numbers to the nearest 100 – **Question 1**

Round off the given number to the nearest hundred.

427

**Explanation**

In, present case,

We have 427 in which 2 is in tens place and 7 in ones place

We know that 2 < 5

Hence, the required rounded number is 400

#### Rounding off numbers to the nearest 100 – **Question 2**

Round off the given number to the nearest hundred.

672

**Explanation**

In, present case,

We have 672 in which 7 is in tens place and 2 in ones place

We know that 7 > 5

Hence, the required rounded number is 700

## Rounding off numbers to the nearest 1000 ( Thousands ).

**(1) In order to rounding off number to the nearest thousands we will first check if the hundreds digit is greater than or lesser than 5**

**(2) If the hundred’s digit is greater than 5, we will increase thousands digit by 1 and replace hundreds, tens and ones digit by 0. **

**(3) If the hundred’s digit is lesser than 5, we will replace hundreds, tens and ones digits by 0, and other digits remain same.**

#### Rounding off numbers to the nearest 1000 – **Question 1**

Round off the given number to the nearest thousand.

3846

**Explanation**

In, present case,

We have 3846 in which 8 is in hundred place , 4 is in tens place and 6 in ones place

So, 8 > 5

Hence, the required estimated number is 4000

#### Rounding off numbers to the nearest 1000 – **Question 2**

Round off the given number to the nearest thousand.

8467

**Explanation**

In, present case,

We have 8467 in which 4 is in hundred place , 6 is in tens place and 7 in ones place

So, 4 < 5

Hence, the required estimated number is 8000

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