Explain why 15.839 rounded to the nearest tenth is 15.8

Step-by-step explanation:

A tenth is 0.1

To round of to the nearest tenth means to round it of to 1 decimal place.

Now, look at the number after the tenth place with is 0.03 or simply 3.

If the digit is 0-4, you round the whole number down.

Hence, 15.839 is 15.8 to the nearest tenth digit.

If the tenth digit is 5-9 such as 15.85 or 15.87, you round the number up, to give 15.9