800
750 would round up to 800 (nearest hundred).
750
It is 750.
It is 9100 rounded to the nearest hundred
7200
199
It rounds to 4
It is then 6 when rounded to the nearest whole number because .8 rounds up to 1
800
0
300
It is 9100 rounded to the nearest hundred
1500
600
No number can round to 943 to the nearest hundreds.
7200
The mystery number is 155. When rounded to the nearest hundred, it rounds to 200. The sum of its digits is 1+5+5=11 which is greater than 10, so we must adjust the digit in the hundreds place. When rounded to the nearest ten, 155 rounds to 160, which has digits summing up to 1+6+0=7.
800
3,500,000 rounds up. 3,499,999 rounds down.
3,500,000 rounds up. 3,499,999 rounds down.