It is 1000.
It is 72.
To round a number to a certain place value, you look at the digit immediately to the right of that place value. If it is 5 or greater, you round up; if it is less than 5, you round down. For example, to round 3.785 to the nearest hundredth, you would look at the digit in the thousandths place (8), which is 5 or greater, so you round up to 3.79.
That's correct if rounding to the second greatest place value, but not the greatest. The greatest place value in a three digit number is the hundreds place. 849 rounded to the nearest hundred is 800.
Well, isn't that a happy little question! To round 4399 to the greatest place value, we look at the hundreds place, which is 4. The next place value to the left is the thousands place, which is where we stop. Since the digit in the thousands place is 3, which is less than 5, we keep the hundreds and thousands place the same and change the rest to zero, rounding 4399 to 4000.
In the number 3,400 the greatest place would be the 3. And in 800, the greatest place would be the 8. Basically it is the highest value in a number.
Whatever the greatest place is, look at the number immediately to the right of it. If that number is 4 or lower, zero it and everything to the right of it out. If that number is 5 or higher, increase the greatest place by one and zero everything to the right of it out.
800
10000
200,000
It is 1000.
20,000
Round 152+269 to the greatest place value
4000
1000000000
20,000
5000