Answer: It is 80000
Step-by-step explanation:
To round a number to the nearest ten thousand you should take the last four digits and repleace them by 0000, and the five digit should stay the same, if the four digits are a number between 0001 and 4999.
If four digits are between 5000 to 9999, you should add one number to the five digit.
In this case four digits are 2964, so the five digit stays as is "8". And the four digits are replaced by "0000", so rounded number is 80000.