Math 6 L1 Part 2

Math six.

Less than one.

Part 2.

All right.

Have you got your paper and pencil out?

You ready to go?

Good. I'm going to show you a paper up here

on the screen and I want you to copy it

down as we write it.

If there's ever a time that you need a little

bit of extra time.

Maybe I'm moving the screen across too quickly and you

need some extra time.

Just press pause on the video and then you can

copy down the screen and you can come back and

press play when you're ready to continue on Right.

And number one, we've got standard form and I want

you to write the number 72,831 in our standard form

place right next to the words standard form.

Do your best to keep this paper nice and neat.

This is going to be a good help to you.

If you ever forget exactly how to do the forms,

you can always come back and look at this paper.

Number two, we are going to write word form.

So once you have written number two and word form,

I want you to go ahead and write the word

form for the number 72831.

Make sure that you pay attention to where the period

ends so that you can place that comma in there.

The number period.

That sounds a little bit confusing doesn't it?

When we say the period in the comma it sounds

like we need the period at the end of a

sentence. But look at the end of the number period

and place the comma in You met done with that

one. This is how you should have written it.

Obviously you don't have to have it on the exact

lines that I do.

I just ran out of room but this is the

correct spelling and the correct order of your numbers.

And also keep in mind we only use our dash

or hyphen in between our numbers one through 99.

So that's a good easy way to remember where we're

supposed to put those when we're writing our numbers.

So we put one between 72 And we put one

between 31.

We're not going to put one between 800 because 100

is not between one and 99.

Does that make sense?

I hope so.

Remember if you ever have a question, just send me

a message on google classroom and I would love to

help you out.

All right, we're gonna move on to number three are

expanded form.

Some of you know how to do expanded form or

possibly all of you know how to do expanded form

and you can get started on that right away.

We're going to do it together here in just a

minute after we've given everyone a chance to write.

So we've got expanded form.

Remember we're going to look at the number or at

the digit with the greatest value first.

So I like to look up at the standard form

because I think it's easier to see up there.

What what digit has the greatest value?

That would be the seven and looking at its place

value. What is that seven worth?

Ignoring all the other numbers.

Just looking at its place value.

We know that it's worth 70,000 And we're going to

add that 70,000 to the next number of the greatest

value. And that's the two.

It's in the thousands place.

The 1000's place.

So it will be worth 2000.

Then we're gonna add it to the next digit Which

is eight.

What places the eight n The hundreds.

So we're going to add it to 800.

Don't forget that.

Plus sign.

We've got two more digits that we're looking at.

The first one is a three and it's in the

tense place.

So we know that three tens equals 30 and finally

we're going to add that to one because we have

one ones.

Do you get it?

All right, let's move on to number four expanded form

with multiplication.

Make sure that you have on number three.

Your expanded form written correctly.

If you wrote ahead of me a little bit and

yours as different.

Make sure that you fix it and it's exactly the

same because if our expanded form is incorrect are expanded

form with multiplication is most likely going to be incorrect.

So make sure your expanded form is correct.

Remember we're going to begin by putting parentheses out And

inside of our first set of parentheses.

We're going to have seven times 10,000 we're going to

end that parentheses and put a plus sign And we're

going to add inside of our parentheses.

We're going to put two times 1000 and the parentheses

and put a plus sign Their next set of parentheses.

We're going to put eight times 100.

Don't forget to add that plus sign after you end

your parentheses.

Finally we're going to put three times 10 inside of

a set of parentheses and last but certainly not least.

We're going to put one times one in our final

set of parentheses.

If you need to pause this screen so that you

can finish copying this down.

You may because we're going to go ahead and we're

gonna move on to comparing numbers now.

We know how to compare numbers we use are greater

than are less than and are equal.

Science to compare numbers correct.

We're gonna start off nice and easy and we're going

to compare numbers with differing number of digits.

These ones are pretty easy to tell right off the

bat which one is greater than which one is less

than or if they're both equal and remember when they

have a different number of digits we always look at

them and we tell um which one has more periods

so which everyone has more periods.

And if there's one that has more periods, we know

that that automatically is always going to be greater in

value. We can see that the number on the left

has two periods in it two number periods.

And the number on the right only has one number

period. So we can tell that the first one is

going to be greater than Can you read this number

sentence with me?

Ready begin 1732 is greater than 732.

So those ones are pretty easy when they've got different

number of digits.

But let's go ahead and this time let's compare um

some digits that have this or some numbers that have

the same number of digits in them.

So for example we've got these two numbers down here.

These have the exact same number of digits in them.

So that means that we've got to look through and

we've got to decide which one is greater or if

they are both equal, we do that by looking at

the digits with the greatest value.

So in both of these numbers they both begin with

an eight.

That means that they're equal right now.

So we're going to move to the next greatest value

and it's four.

So so far right now in the millions period.

Both of the numbers are the same.

Let's hop over to the thousands period and see if

they're all the same here.

Our first number in the thousands period is the same.

We have seven But to move to the next and

it's six.

So it's the same.

Now our last number in the thousands period is different.

Do we see that in our first number?

It's a nine.

And in our second number it is an eight.

So just by looking at these right now we can

tell that one of these numbers is greater than the

other. Which number is greater than the other?

Our first number is greater than our second number.

Can you read this number sentence with me?

Ready began 84,769,320 is greater than 84,768,320.

There's only one number that changes those.

Just that one number makes one number greater, but it

only takes one number.

Right? All right.

I want you to go ahead and grab back out

your piece of paper and your pencil and we're gonna

go ahead and we're gonna work through some comparing some

numbers that look a little bit different.

Okay, now on my videos I'm only allowed a certain

amount of time before my video shuts off and I've

only got about four minutes before my video shuts off

and I don't want it to do it in the

middle of us taking notes.

So we're going to end this video and I want

you to grab your piece of paper in your pencil

and then I want you to click on part three

of this math lesson today.

Okay. That way it doesn't click us off right in

the middle of when we're trying to learn something or

trying to review something.

All right, go ahead and grab those things and then

come right back as soon as you're ready.

Math 6 L1 Part 2

Chapters

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