126,472 round to the nearest ten thousand

130,000

Explanation:

the fifth diget from the right is always a ten thousand. So you know that you have to round that. Now you look at the thousand. When the number is under a 5 then you round down and if the number is a 5 or higher then you round up. In this case the thousand is a 6 so you round up and turn the 2 into a 3. The rest of the numbers that are after the three turn into a 0.

I hope this helps XD

the correct answer is (a) . answer should be simple, clear and brief.