1. Naming Numbers

2. Marks just aren’t enough
Folks back in the very olden days would make marks to stand for the amounts of things.
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3. That’s fine for a few… but when you see
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Then understanding how many you have is challenging, especially if you don’t even have names for the bigger numbers.

4. Voila! The Decimal number system 
We use a system where we recycle the same ten symbols – but they’re worth more in a different position, in the same way that a ten dollar bill is worth more than a 1 dollar bill, even if the piece of paper is the same size.

5. Naming the numbers
Here’s a page that shows the numbers one through twenty-one (1-21) and pictures of bugs, in the amount each number stands for, beside them.
If this is familiar, speed on through; if not, feel free to take some time with each page.

7. The Little Guys
The words for 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 are: one, two, three, four, five, six, seven, eight, nine and ten.
The words for 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 are: eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen and twenty.

8. After twenty, there is a pattern to the words:
10 ten
20 twenty
30 thirty
40 forty
50 fifty 
60 sixty
70 seventy
80 eighty
90 ninety
100 one hundred
If the ones place has more than zero, the word is formed by using the ten's place word, a hyphen, and then the ones place word. 

9. Examples are:     38 is thirty-eight     84 is eighty-four     25 is twenty-five
141 is one hundred forty-one
308 is three hundred eight
650 is six hundred fifty

10. 441 is four hundred forty-one 980 is nine hundred eighty
Once we get to a hundred, we simply say how many of that bigger place we have, and then whatever is left. We don’t use and; it’s reserved for fraction parts like one *and* a half hours or one *and* three tenths of a mile.
108 is one hundred eight
441 is four hundred forty-one
980 is nine hundred eighty
Have an option for a quiz here. Have an option to skip right to the big guys here, too.

11. Practice naming the medium sized numbers
Write these out in letters and words:

12. Practice naming the medium sized numbers
One hundred forty-five five hundred two three hundred eighty-three six hundred ninety-eight Sixty-one two hundred eighty five hundred fifty-one seven hundred thirty-eight

13. A little More practice 
Six hundred twenty-five
Four hundred eighty-six
Three hundred fifty
Three hundred five
Three hundred ninety-five

14. Answers  Six hundred twenty-five 625 Four hundred eighty-six 486
Three hundred fifty
Three hundred five (there aren’t any tens – but we have to say that with zero!)
Three hundred ninety-five

15. Want more practice? There’s lots of it here:
html
if you prefer clicking to spelling the words out