To round 452.39 to the nearest tenth, follow these steps:
Identify the tenth place: In the number 452.39, the tenth place is the first digit after the decimal point, which is 3.
Look at the hundredth place: The digit in the hundredth place (the second digit after the decimal point) is 8.
Apply rounding rules: Since the digit in the hundredth place (8) is greater than or equal to 5, you round the tenth place up by 1.
Final rounded result: The tenth place (3) becomes 4, so the number rounds to 452.4.
Thus, 452.39 rounded to the nearest tenth is 452.4.