Round decimals
key notes:
Find the place you want to round. Look one place to the right. If the digit is less than 5, round down. If the digit is 5 or higher, round up.
Learn with an example
What is 52.8 rounded to the nearest whole number?
First, find the digit in the ones place. This is the place you want to round:
52.8
Now look one place to the right:
52.8
8 is greater than 5, so you will round up. Remove all the digits to the right of the ones place:
52.8 → 52
Now add 1 to the number:
52 → 53
What is 31.8 rounded to the nearest whole number?
First, find the digit in the ones place. This is the place you want to round:
31.8
Now look one place to the right:
31.8
8 is greater than 5, so you will round up. Remove all the digits to the right of the ones place:
31.8 → 31
Now add 1 to the number:
31 → 32
What is 93.3 rounded to the nearest whole number?
First, find the digit in the ones place. This is the place you want to round:
93.3
Now look one place to the right:
93.3
3 is less than 5, so you will round down. Remove all the digits to the right of the ones place:
93.3 → 93
What is 8.2 rounded to the nearest whole number?
First, find the digit in the ones place. This is the place you want to round:
8.2
Now look one place to the right:
8.2
2 is less than 5, so you will round down. Remove all the digits to the right of the ones place:
8.2 → 8
What is 2.5 rounded to the nearest whole number?
First, find the digit in the ones place. This is the place you want to round:
2.5
Now look one place to the right:
2.5
5 is equal to 5, so you will round up. Remove all the digits to the right of the ones place:
2.5 → 2
Now add 1 to the number:
2 → 3
let’s practice: