What is 13.8924439894 rounded to the nearest tenth

1st decimal place=tenth

2nd=hundreth

to round, you look at the place after it

so 13.8924439894 to tenth

look untill hundreth

13.89

if hundreth>5, round tenth up

if hundreth place<5 leave tenth as is

13.89

9>5

round up

8+1=9

13.9 is to theh tenth

the answer is 13. 90 if you round it to the nearest tenth. the nearest tenth is the 9 the first nine. (if the number is 0-5 then it will become a 0 but if the number is 5-9 you would add one to the number in front of it) since the number is 9 then the 8 would become a 9 so your answer would be 13.90

hope I explained it well enough.