# Round to the Nearest Tens – Definition with Examples

» Round to the Nearest Tens – Definition with Examples

## Rounding

Rounding refers to the process of converting a particular number to an easy number. The rounded number is not exact but an estimate of the given number.

## Purpose of Rounding

Usually, we round numbers for:

1. Making calculations easy.
2. Making the numbers easy to understand and remember.

## Applications of Rounding

Estimation: We use rounding to guess the most appropriate answer. Rounding is the process of estimation.

For example, Samantha wants to buy chocolates for $97. She can estimate the amount to the nearest tens and give$100. The shopkeeper will return Samantha \$3.

Estimation helps us to calculate easily.

## Rounding Numbers to the Nearest Tens

We can follow the given steps to round numbers to the nearest tens:

Step 1- We look at the number we want to round.

Step 2- As we are rounding the number to the nearest tens, we mark the digit in the tens column.

Step 3- Now we look at the ‘ones’ column (the digit to the right of the tens column).

Step 4- (i) If the digit in the one’s column is 0, 1, 2, 3 or 4, we will round down the tens column to the nearest tens.

(ii) If the digit in the one’s column is 5, 6, 7, 8 or 9, we will round up the tens column to the nearest tens.

Step 5- Write ones digit as 0 and remove all the digits after the one’s column. The left out number is our desired answer.

Example 1: Round 524 to the nearest ten.

Example 2: Round 117.32 to the nearest tens.

Example 3: Tom is 149 cm tall. Write his height in the nearest tens?

Exception case:

Example 4: Round the number 199.278 to the nearest tens.

Example 5: A park measures 249.9 meters in length. How long is the park to the nearest 10 meters?

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