The ability
to be at home with large numbers like millions,
billions,
trillions, and quadrillions, and not just knowing how many zeros they each have.
Being aware that a million has
6 zeros, a billion has 9 zeros, a trillion has 12 zeros, and a
quadrillion has 15 zeros is only the first step; we need to try visualizing the difference between them by putting them into context—we need that
zero sense to get a feel of what these numbers represent.