Question

15.839 rounded to nearest tenth

Answer 1

The next larger tenth is  15.9  .
The next smaller tenth is  15.8  .

15.839  is nearer to  15.8  than it is to  15.9  .

So the nearest tenth is  15.8  .

Answer 2

15.839 rounded to the nearest tenth is on 9 so it is all still the same = 15.839