The Universe in an Hourglass: A Time for Everything
The numbers one through nine (and the placeholder zero) are used in combination to create all other
numbers in a base-ten counting system. For example, the number one billion two hundred thirty-four
million five hundred sixty-seven thousand e ight hundred ninety (1,234,567,890) conta ins the numbers
one through nine and the placeholder zero. Numbers greater than nine can be broken down into one of
the origina l nine numbers of va lue in a base-ten counting syste m.
For example , the number ten appears as a one and a zero (10). When one and zero are added
together they equa l one (1 + 0 = 1). Likewise, a count greater then nine can be broken down to one of
the nine original numbers of va lue (as can all other numbers).