Which number rounds to 15,700,000 when rounded to the nearest hundred thousand?
A.15,000,000
B.15,579,999
C.15,649,999
D.15,659,999
15,659,999
15,579,999
To find the number that rounds to 15,700,000 when rounded to the nearest hundred thousand, we need to understand rounding rules.
Rounding to the nearest hundred thousand involves looking at the digit in the hundred thousand place (the sixth digit from the right) and the next digit (the ten thousand place, the fifth digit from the right).
In this case, 15,700,000, the digit in the hundred thousand place is 0, and the next digit in the ten thousand place is also 0.
Following the rounding rules, if the digit in the ten thousand place is less than 5, the digit in the hundred thousand place remains the same. If it is 5 or greater, we add 1 to the digit in the hundred thousand place.
Now let's look at the given options:
A. 15,000,000: The digit in the ten thousand place is 0, which is less than 5. Therefore, the digit in the hundred thousand place remains the same. This number does not round to 15,700,000.
B. 15,579,999: The digit in the ten thousand place is 9, which is 5 or greater. Therefore, the digit in the hundred thousand place should be increased by 1. This number does not round to 15,700,000.
C. 15,649,999: The digit in the ten thousand place is 4, which is less than 5. Therefore, the digit in the hundred thousand place remains the same. This number does not round to 15,700,000.
D. 15,659,999: The digit in the ten thousand place is 5, which is 5 or greater. Therefore, the digit in the hundred thousand place should be increased by 1. This number rounds to 15,700,000.
Therefore, the correct answer is D. 15,659,999.