Question

What is the greatest whole number that gets rounded off to 600 when it is rounded to the nearest hundred?

• A. 649
• B. 640
• C. 650
• D. 599

Answer 1

The correct option is A 649

If the digit at the tens place of a number is less than 5, we round down the number to the hundreds that comes before this number. If the digit at tens place is greater than or equal to 5, we round the number up to the hundreds that comes next to the number.

All numbers that lie between 500 and 600 that have a digit 5 or greater than 5 at the tens place, will be rounded up to 600.
Also, all numbers that lie between 600 and 700 that have a digit less than 5 at the tens place will be rounded down to 600.
So, the largest number that gets rounded off to 600 is 649.