To round 25.12 to the nearest tenth, follow these steps:
Identify the tenth place: In the number 25.12, the tenth place is the first digit after the decimal point, which is 1.
Look at the hundredth place: The digit in the hundredth place (the second digit after the decimal point) is 2.
Apply rounding rules: Since the digit in the hundredth place (2) is less than 5, you do not change the tenth place.
Final rounded result: The tenth place (1) remain the same 1, so the number rounds to 25.1.
Thus, 25.12 rounded to the nearest tenth is 25.1.