Do the subtractions - 735 - 700, versus 800 - 735, and see which is less.
653 is closer to 700 than 800
It is closer to 800.
It is the same distance from 700 to 800.
Oh, dude, 739 is definitely closer to 700 than 800. I mean, it's like basic math, right? You just gotta look at the numbers and see which one it's closer to. Easy peasy lemon squeezy.
The nearest hundred to 728 is 700. (728 is closer to 700 than it is to 800).
It is 700.
You round to the nearest tens place. In this case, 738 rounded to one significant figure is 700.
A Boeing 737-800.
800 * 700 = 560,000
100 + 700 = 800
700