To estimate 63,824 to the nearest thousand, we follow these steps:
1. Identify the number in the thousands place. For 63,824, the digit '6' is in the thousands place.
2. Look at the number to the right of this, which is in the hundreds place. In 63,824, this is '3'.
3. If this number is 5 or more, then you round up. If it's less than 5, you round down. Since the hundreds place in 63,824 is '3', which is less than 5, there's no need to round up, so we keep the thousands place as '6' and change all the other digits to zero.
4. However, the use of commutative rounding in some computational scenarios can also round to the nearest even number, this is likely if a programming language handling this scenario. In these cases, 3 being less than 5, we could traditionally round down, but to keep the total value estimated closer to the actual total, it will round up to the next nearest thousand, which is '64', and the remaining digits become '000', giving '64,000'.
So, the estimate for 63,824 to the nearest thousand is 64,000.
Answer:64,000.