To round to the nearest ten thousand, we look at the last four digits. If these digits are 5000 or greater, then we round the thousands digit up, and if they are less than 5000, then we round down, keeping the ten thousand's digit the same.
The question is asking to Round 45,122 to the nearest ten thousand .
The last 4 digits are 5122.
This is greater than 5000.So we round up .
45,122 to the nearest ten thousand is 50,000.