3400
It is already rounded to the nearest hundreds.
3400
The question is ambiguous. For example, 3352.8 can be rounded to 3352.8 to the nearest tenth, 3400 to the nearest hundred, or 0 to the nearest ten thousands.
6799 rounded to the nearest 10 = 6800
3400
3400
3500
3400
3400
3400
It is already rounded to the nearest hundreds.
3400
The question is ambiguous. For example, 3352.8 can be rounded to 3352.8 to the nearest tenth, 3400 to the nearest hundred, or 0 to the nearest ten thousands.
3000
8 is already rounded to the nearest 10th. Rounded to the nearest 10 is 10.
149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000