To round 153.86 to the nearest tenth, you look at the digit in the hundredths place (which is the second digit after the decimal point). In this case, the number is:
- 153.86
The digit in the tenths place is 8, and the digit in the hundredths place is 6. Since 6 is 5 or greater, you round up the tenths place by 1.
So, 153.86 rounded to the nearest tenth is:
153.9.