Answer:
10000, 10000, 10000
Step-by-step explanation:
When rounding, we just need to look at the first digit after the "rounding to" digit.
As follows: we adjust the bold digit according to the <u>underlined</u> digit.
In the first case, we need to round the last 999<u>9</u> - so we round it up.
In the second case, we need to round 99<u>9</u>9 - so we round it up.
In the third case, we need to round 9<u>9</u>99 - we round up yet again.
