1. Let the humongosity begin!
Naming Large Numbers
Let the humongosity begin!

2. Counting isn’t enough
As you may have already heard, ancient people would make marks to stand for the amounts of things.
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That’s fine for a few things… but when you see
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then understanding how much you have is a challenge.

3. Voila! The Decimal number system 
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.
This is the slide show for people who already know how to name numbers up to If you want to review that, go to the first slide show in this set, 094NamingSmallNumbers .

4. The “thousands” family.
The fourth, fifth and sixth places in a decimal number stand for “thousands.”
1,000 is one thousand.
The three digits afterward mean that these digits don’t just stand for one puny thing – one goldfish, one bicycle or one sweaty sock – but they stand for a group of one thousand of whatever you’re counting.
Thus,
6,000 means six *thousand* sweaty socks or goldfish.

5. 20 rolls of 50 pennies (50 x 20) 1000 pennies
If you want to see more pictures of lots and lots of things…
( )

6. One thousand pennies (5 columns, 5 rows, 40 pennies in each stack… 25 x 40 or 5 x 200; either way…

7. (http://kokogiak.com/megapenny/default.asp )
If you want to see more pictures of lots and lots of things… 2/visualizing-billions.html

8. Enough distraction already! The names, the names!
So… the numbers in the fourth fifth and sixth places are in the Thousand group. We can name that clump as if it were its own number, and then add “thousand” to it to show we’re really talking about something a thousand times as big.
In “proper math grammar,” we do not say “and,” since that’s reserved for adding things *less* than one (“one and a half” pounds or “one and 3 tenths of a mile”)
6,000 = six thousand

9. 2,000 = two thousand
12,000 = twelve thousand
56,000= fifty-six thousand
100,000 = one hundred thousand’
232,000 = two hundred thirty two thousand
Read the smaller number in front of the comma, then add “thousand” to show how much it is worth based on its position.

10. Watch for zeroes! 208,000 = Two hundred eight thousand.
There aren’t any tens… but we don’t say it. We still have to put that amount – none – in the space.
Four hundred six thousand = 406,000

11. Your turn! Write these out in words. 34,000 ________________________
34,000 ________________________
8,000 __________________________
18,000___________________________
111,000_______________________________
408,000 _______________________________
For your really kinesthetic learners, have ‘em highlight the part they’re naming.
(in the really good version, you want them to be able to drag the name from little buttons with the names on them that you can hear if you click on them.)

12. 34,000 thirty-four thousand
8,000 eight thousand
18,000 eighteen thousand
111,000 one hundred eleven thousand *
408,000 four hundred eight thousand *
*leave out the “and” even if you thought it 

13. Write these as numbers Three hundred twenty-one thousand
Fifty-six thousand
One hundred thousand

14. The answers  Three hundred twenty-one thousand 321,000
Fifty-six thousand
56,000
One hundred thousand
100,000
… so, you read the digits in front of the comma as if they were the only digits there, then add “thousand” to show they are standing for something a thousand times as big.
Note to self: remember you have to say to put in the zero… This is for the “programmable” version.
Make up five of your own numbers and their answers. See if they’re right!

15. Okay, what about the millions?
998,000 = nine hundred ninety-eight thousand
999,000 = nine hundred ninety- nine thousand…
…. What’s next?
1,000, a THOUSAND THOUSAND.
But that’s not what we call it. Hey, it gets another comma, and its own name.
This is what a “million” is all about.

16. This is a what a million looks like.

17. Millions work the same way as thousands; they’re just a thousand times as big as a thousand..
3,000,000 is three million.
147,000,000 is one hundred forty-seven million.
Look for patterns  Your turn to try these! Click when you’re ready to check the answers.
14,000,000 _________________
100,000,000
244,000,000
Need more examples? Click here.
(In the programmed version, if you miss ‘em you get to go see those more examples. )

18. Millions work the same way as thousands; they’re just a thousand times as big.
14,000,000 fourteen million
100,000, a hundred million
244,000,000 two hundred forty-four million
Need more examples? Click here.
(In the programmed version, if you miss ‘em you get to go see those more examples. )

19. Try writing numbers for these:
Twelve million
Twenty million
Two hundred twenty-two million

20. Try writing numbers for these:
Twelve million – 12,000,000
Twenty million – 20,000,000
Two hundred twenty-two million
222,000,000
The six zeroes tell you you’re talking about the millions.

21. Then Billions.
Imagine a *thousand* rooms with a million dollar bills in them (like the picture of a million). That’s what a billion would look like. It would take a whole building.
In numbers, it looks like this:
1,000,000, one billion
345,000,000,000 – three hundred forty-five billion
801,000,000,000 – eight hundred one billion

22. Name these numbers
45,000,000,000
100,000,000,000
727,000,000,000

23. Name these numbers 45,000,000,000 Forty-five billion
100,000,000,000 one hundred billion
727,000,000,000 Seven hundred twenty-seven billion

24. Write this as digits Thirteen billion Nine hundred ninety nine billion
One hundred eleven billion

25. Write this as digits Thirteen billion 13,000,000,000
Nine hundred ninety nine billion
999,000,000,000
One hundred eleven billion
111,000,000,000

26. Then TRillions.
Imagine a *thousand* buildings with a thousand rooms with a million dollar bills in them (like the picture of a million). That’s what a trillion would look like. It would take a whole block…
In numbers, it looks like this:
1,000,000,000, one trillion
335,000,000,000,000 – three hundred thirty- five trillion
601,000,000,000,000 – six hundred one trillion

27. Name these:
3,000,000,000,000
17,000,000,000,000
111,000,000,000,000
532,000,000,000,000
901,000,000,000,000

28. Here are their names: 3,000,000,000,000 three trillion
17,000,000,000, seventeen trillion
111,000,000,000, one hundred eleven trillion
532,000,000,000,000 five hundred thirty-two trillion
901,000,000,000,000 nine hundred one trillion

29. Write these as digitized numbers
Five hundred sixty-five trillion
Nine trillion
Nine hundred trillion
Six hundred thirty-seven trillion
Two hundred three trillion

30. Write these as digitized numbers
Five hundred sixty-five trillion 565,000,000,000,000
Nine trillion
9,000,000,000,000
Nine hundred trillion
900,000,000,000,000
Six hundred thirty-seven trillion
637,000,000,000,000
Two hundred three trillion
203,000,000,000,000

31. Let’s combine the groups.
Thousands, millions, billions and trillions – let’s mix ‘em up.
You’ll need to figure out two things:
the name of the number that the group would be if it were all by itself
The name of the group to say afterwards…
56,000,000….
It’s “fifty-six” --- but with six zeroes afterwards, that makes it fifty-six million.

32. What’s the name of the group? Name these numbers
413,000,000
21,000
5,000,000,000
101,000 65
65,000,000,000,000
307,000,000
91,000,000,000
610,000

33. What’s the name of the group? Name these numbers
413,000, four hundred thirteen million
21, twenty-one thousand
5,000,000,000 five billion
101, one hundred one thousand
sixty-five
65,000,000,000,000 sixty-five trillion
307,000, three hundred seven million
91,000,000, ninety-one billion
610, six hundred ten thousand

34. Digitize these  Seventeen billion Ninety-seven million
Ninety-seven thousand
Two hundred eighty-five million
Two hundred eighty-five billion
Two hundred eighty-five trillion
Eighty-five thousand
Twelve billion

35. Digitize these  Seventeen billion 17,000,000,000
Ninety-seven million ,000,000
Ninety-seven thousand ,000
Two hundred eighty-five million ,000,000
Two hundred eighty-five billion 285,000,000,000
Two hundred eighty-five trillion ,000,000,000,000
Eighty-five thousand ,000
Twelve billion ,000,000,000

36. Next up – more significant figures…
Next show will go over how to name large numbers that don’t have a lot of zeroes at the end.