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**Let the humongosity begin!**

Naming Large Numbers Let the humongosity begin!

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

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**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 .

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**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.

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**20 rolls of 50 pennies (50 x 20) 1000 pennies**

If you want to see more pictures of lots and lots of things… (http://kokogiak.com/megapenny/default.asp )

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

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**(http://kokogiak.com/megapenny/default.asp )**

If you want to see more pictures of lots and lots of things… 2/visualizing-billions.html

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**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

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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.

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**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

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**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.)

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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

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**Write these as numbers Three hundred twenty-one thousand**

Fifty-six thousand One hundred thousand

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**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!

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**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.

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**This is a what a million looks like.**

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**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. )

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**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. )

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**Try writing numbers for these:**

Twelve million Twenty million Two hundred twenty-two million

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**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.

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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

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

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**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

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**Write this as digits Thirteen billion Nine hundred ninety nine billion**

One hundred eleven billion

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**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

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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

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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

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**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

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**Write these as digitized numbers**

Five hundred sixty-five trillion Nine trillion Nine hundred trillion Six hundred thirty-seven trillion Two hundred three trillion

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**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

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**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.

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**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

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**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

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**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

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**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

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**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.

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