91Ó°ÊÓ

The given digits are$784,951$

(a) The number is: $784951$

In the given number, the digit in the hundreds place is $9$.

$784951$

Since the number on the right of $9$is $5$, add one to $9$to round the number to the nearest hundreds: $785000$

The rounded number is: $785000$

(b) The number is: $784951$

In the given number, the digit in the thousand place is $4$.

$784951$

Since the number on the right of $4$is $9$, add one to $4$to round the number to the nearest hundreds: $785000$

The rounded number is: $785000$

(c) The number is: $784951$

In the given number, the digit in the ten thousand place is $8$.

$784951$.

Since the number on the right of $8$is $4$, round down the numbers from the right of $8$which is $0$to round the number to the nearest ten thousands: $780000$

The rounded number is:$780000$