because of the digit in the ones place. 3 is greater than 1.

When we round a number to the nearest ten we look to the ones place to tell us if we round up or down.

If the number in our ones place is or greater, we round up. If the number in the ones place is or less, we round down. When we round up, the number in the tens place increases by and all the other numbers to the right become . When we round down, the number in the tens place stays the same and all the other numbers to the right become .

In this case, is less than so our rounded number is