Round 23.578 to the nearest tenth. Find the tenths digit, then look at the next digit: 5 or more rounds up, 4 or less leaves it. To name that digit, or to find what it is worth, use which digit and value of a digit. For significant figures, use significant figures.
Round 23.578 to the nearest tenth.
1 decimal place is the nearest tenth. 2 decimal places is the nearest hundredth. A 5 rounds up, including on a negative number, and the sign goes back at the end.