OSCAR: Welcome to headquarters.,..

Greetings, agents!

Here in the ball room, we discuss top secret missions.

If you ever find yourself here, everything you need is just at your fingertips.

We've got paper... And we've got pens!

We've even got our own professional note-taker...

Thank you, Mrs. Latovsky!

In order to keep the top secret missions we discuss here extra secret, we change the balls daily.

Now, if you're ever asked to do this, you're gonna need to know how many balls are in here.

You could count them one-by-one, but that would take a really long time.

Another way of doing it is to find out about how many balls are in here.

It's also called estimating.

And here's how you do it.

There are about 100 balls in this cluster... Now how many clusters of this size would you need to cover the top layer of this room?

Ten clusters.

So, if we have ten clusters, each with 100 balls, that's ten one hundreds.

100, 200, 300, 400, 500, 600, 700, 800, 900, 1,000!

So that means there are approximately 1,000 balls in the top layer of the ball room.

But that's just the top layer.

How many layers deep is it?

I see 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 7,000, 8,000.

So I would estimate that there are 8,000 balls in the ball room.

Another interesting fact - Each ball is flavoured.

Green is watermelon, red is cherry, and yellow is banana cream pie.

That's Mrs. Latovsky's favourite.