we know that
When rounding to the nearest hundred, look at the TENS DIGIT of the number.
If that digit is , you will round down to the previous hundred.
If that digit is , you will round up to the next hundred
Part a) what is the greatest whole number that rounds to ?
The answer is
Explanation
the tens digit of the number is
so
you will round down to the previous hundred.
≈
Part b) what is the least whole number that rounds to ?
The answer is
Explanation
the tens digit of the number is
so
you will round up to the previous hundred.
≈