What is 3994 rounded to the nearest 100?

Answer 1

4000

Answer 2

4000, think about it. If the tens place rounds the hundreds up, you add one hundred and drop the tens, ones, etc. It's the same thing with the digit 9, only the next number is 10, so you have 3994+100, which equals 4094. then you drop the tens and ones to get 4000.