Answer:
25.50
Explanation:
25.51
If you look at the 1, you can see it is below 5, therefore, you round down. If you round down, it is 25.50
One Decimal Place Rule #1: If the last digit in 25.51 is less than 5, then remove the last digit.
One Decimal Place Rule #2: If the last digit in 25.51 is 5 or more and the second to the last digit in 25.51 is less than 9, then remove the last digit and add 1 to the second to the last digit.
One Decimal Place Rule #3: If the last digit in 25.51 is 5 or more and the second to the last digit in 25.51 is 9, then remove the last digit, make the second to last digit 0, and add 1 to the number to the left of the decimal place.
When rounding 25.51 to one decimal place we use One Decimal Place Rule #1. Therefore, the answer to "What is 25.51 rounded to 1 decimal place?" is: 25.50