Question

How do you round 3.99 to the nearest tenths?

Answer 1

Look at the number in the tenth place, in this case it’s 9
You found up the number if it’s greater or equal to 5 and round down if it is less than 5
Since it’s greater than 5 you round up
Now 3.99 turns into 4.0
You’re answer is 4.0

Hope this helps! :3