The given number is 56,512
In order to round a number to the nearest thousand, we first look at the hundreds digit.
If the hundreds digit is greater than or equal to 5, we simply round up. But if it is less than 5 we round down.
In the number 56, 512, the hundreds digit is 5, which means we need to round up
In rounding up, we increase the digit at thousands place by 1 and replace each one of the digits at hundreds, tens, and unit place by 0.
Therefore, 56, 512 to the nearest thousand equals 57,000