Answer:
140,000
Explanation:
We know that the number is 143,699.
We are asked to round to the nearest ten thousand, which is the number bolded:
143,699
This means we have to look at the number to the right of the 4, which is 3. If this number is below "5", then we round down to get 140,000.
If this number was (and it's NOT) above "5" or "5" itself, we would round up to 150,000.
Since "3" is below "5", we would round down to 140,000.
Hope this helps! :)