(bell rings) (children cheering) - [Tony] Get ready for a very special, super duper math class.

We're going on a field trip where learning math is tons of fun.

Our destination is the "Math Park" with our friends, Ranger Rith, Ashley, Charles, Mike, Janet, Kiffen and Matt Dillon.

(children cheering) (quirky music) - Hello, chipmunks.

Welcome to "Math Park."

I am Park Ranger, A.Rith Metic but you can call me Ranger Rith.

"Math Park" is the place where your uncle sets up a picnic, your aunts crawl all over the food and math is always fun.

We're gonna have a grand time.

Today, we'll learn multiplying by 10.

(graphic blipping) (funky music) - Hello, everyone.

I'm Betty Crockpot and welcome to my kitchen, where we use everyday math to make delightful goodies every day.

Today, I'm going to make giant oatmeal raisin cookies, four of them.

and each one needs to have 10 raisins in it.

But I wonder how many raisins I'll need.

I've drawn a picture to help us figure it out.

Huff, could you bring it in please?

Here are the four cookies with 10 raisins drawn in each one.

What would be the best way to find out how many I'll need?

Let's see.

I could count each one.

Of course I could always count by tens, 10, 20, 30, so on, faster still.

But the fastest way to get my answer would be to multiply.

Four groups of 10 raisins each, 4 times 10 equal 40.

Yum!

Bye, bye for now, this is Betty Crockpot saying see you next time when we use everyday math to make delightful goodies everyday.

(funky music) - [Tony] Here are the 10s multiplication facts.

Look at the answers to each problem.

Do you see a pattern?

(gentle jolly music) That's right, each number goes up 10, we are counting by tens.

What else do you notice about the answers?

(gentle jolly music) Each answer ends with a zero.

Do you see any other patterns?

(gentle jolly music) Yes, you simply take the number you are multiplying by 10 and put a zero at the end, that gives you the correct answer.

(graphic blipping) - Multiplying by tens is as easy as pie.

If you wanna know what 6 times 10 is or 10 times 6, hold up six fingers and then count by tens, 10, 20, 30, 40, 50, 60.

6 times 10 is 60.

10 times 6 is 60.

(graphic blipping) - Here's the way I like to multiply by 10.

3 times 10.

All you have to do is write down the three and then add a zero.

3 times 10 equals 30.

Here's another example, 8 times 10.

Write down the eight and then add a zero, 8 times 10 equals 80.

Multiplying by 10 is easy.

(graphic blipping) (bouncy xylophone music) (bell dings) - [Tony] Two groups of yellow dots and there are 10 yellow dots in each group, two groups of 10.

So we can say 2 times 10 is twenty.

(bright music) Oh, the 20 yellow dots are moving, now how many groups do we have?

10.

And how many yellow dots are in each group?

Two.

We have 10 groups of two, 10 times 2 is 20.

- Now let's head over to the Multiplication Station, where Max the Multiplier is multiplying by 10.

(bright energetic music) - [Announcer] From the Fun Factor satellite in outer space, (bright energetic music) and the Proud Product Studios in the Hollywood, you are watching the Multiplication Station.

- Hey, this is your Multiplication Station VJ, Max the Multiplier.

Today, we're multiplying by 10.

Check out these funny videos and then we'll get back.

(bright energetic music) (machine whirring) (bright energetic music) (dial tone droning) (bright energetic music) (paper crackling) (bright energetic music) (spray hissing) (bright energetic music) Hey, how do you think you did?

Are you ready for the Multiplication Station Quicky Quiz?

Let's find out.

(sanguine music) - [Tony] The Multiplication Station presents the Quicky Quiz.

(children cheering) - [Student] Wonderful.

- [Tony] See if you can say the products before Ashley does.

10 times 10 is?

- 100.

- [Tony] 6 times 10 is?

- 60.

- [Tony] Five times 10 is?

- 50.

- [Tony] 8 times 10 is?

- 80.

- [Tony] 1 times 10 is?

- 10.

- [Tony] 4 times 10 is?

- 40.

- [Tony] 7 times 10 is?

- 70.

- [Tony] 3 times 10 is?

- 30.

- [Tony] 9 times 10 is?

- 90.

- [Tony] 2 times 10 is?

- 20.

- How'd you do?

You know if you missed some, you can go back and practice with the video again.

With a little practice, you'll become a multiplication sensation.

(upbeat music) - Oh, I'm sure you did really well multiplying by 10.

It's easy, right?

Well, if you think that's easy, try multiplying by one.

(gentle piano music) - [Tony] Here, we have one group of kittens and they're three kittens in this group.

So if we wanted to write that as a multiplication fact how would we do it?

(gentle piano music) Well, since it's one group of three, we write it as 1 times 3 equals 3.

(gentle piano music) Now take a look at this, (gentle piano music) it's a group of guitars, nine guitars.

So how would we write that as a multiplication fact?

(gentle piano music) It's one group of nine, so we write it as 1 times 9 equals 9.

That's how we write it.

(gentle piano music) Now look at this, we have some teddy bears here and we've grouped them in separate groups.

There's one teddy bear in each group.

Now, how would we write that as a multiplication fact?

(gentle piano music) Well, since there are three groups of one, we write it as 3 times 1 equals 3.

So remember, when you're multiplying a number with one, you always wind up with that same number.

And this is why, - 5 times 1 equals 5.

- [Tony] And, - 6 times 1 equals 6.

- [Tony] And, - 7 times 1 equals 7.

- Now if you think multiplying by one is easy, try multiplying by zero.

(whimsical music) - [Instructor] Now would you look at that, 5 times 0, what does it mean?

Well, to help you out, I drew a picture.

It means five groups of nothing and that's what I've drawn here, five groups with nothing inside each group.

That way it shows you that five times nothing is nothing.

So 5 times 0 equals 0.

Does that make sense?

Now look at this one, 0 times 5.

Now that means something a little different but not a whole lot.

It's zero groups of five.

So if there's zero groups of five, there's still nothing.

So 0 times 5 equals what?

What do you think?

(whimsical music) That's right, zero.

So remember, when you multiply with zero, you're bound to get a big fat zero.

(graphic blipping) (upbeat music) - [Tony] And now it's time for the Multiplication Wipeout.

If you've learned multiplying by 10, you get to wipe out all the multiplying by 10 facts.

Here we go.

(graphics whizzing) Yes, but we're not done.

Let's look at the threes multiplication table.

We get to wipe out any of the facts we've already learned.

Let's wipe out 10 times 3.

(graphics whizzing) Here are the fours.

Let's wipe out 10 times 4.

(graphics whizzing) Here are the fives.

Let's wipe out 10 times 5.

(graphics whizzing) Here are the sixes.

Let's wipe out 10 times 6.

(graphics whizzing) And here are the sevens.

Wipe out 10 times seven because we already know it.

(graphics whizzing) Here are the eights.

Wipe out 10 times eight.

(graphics whizzing) Here are the nines, our last one.

Wipe out 10 times 9.

(graphics whizzing) Next time, we'll be multiplying by five.

It'll be a lot of fun to wipe those out.

(siren blaring) - Did you hear that?

That means "Math Park" is closing for today.

Until "Math Park" reopens, I salute you math chipmunks.

(children cheering) (bright music) ( soft piano music)