Looking at this in terms of sets, let's call O the set of all owls, and F the set of all things that can fly. What this original statement is saying every animal that's a member of the set of all owls is also a member of the set of all things that can fly, or in other words, O⊂F (O is a subset of F). Negating this tells us that, while there's <em>at least one</em> element of O that also belongs to F, O is not contained entirely in F (O⊆F, in notation), so a good negation or our original statement might be:
<em>Not all owls can fly.</em>
First, find the thousands place. Look to the right of the number.
If it's 4 or down, round down. If it's 5 or up, round up.
The number to the right of the thousands is 9, so we round up.
700,000 is our answer.
Hope this helps!
~LENA~