NUMBERS
Numbers are the words or symbols that we use to count
quantity. We have one (1) nose and two (2) eyes on our face. We have four (4)
fingers and one (1) thumb on each hand. There are seven (7) days in a week.
There are twelve (12) months in a year. And there are one hundred (100) years
in a century.
The symbols that we use for numbers today (0, 1, 2, 3, 4,
5, 6, 7, 8, 9) are called Arabic numerals. Another system that you sometimes
see (i, ii, v, x, l, c etc) uses Roman numerals
Cardinal Numbers
"Cardinal numbers" are ordinary numbers like 1,
2, 3. In the chart below, you can see how we make numbers from 0 to 100 and
then some units above that.
The numbers from 13 (thirteen) to 19 (nineteen) all end in -teen
and are called "the teens". This is why people from thirteen to
nineteen years of age are called "teenagers".
