Estimating and measuring
NARRATOR: Hello Snoot, what’s that you’re driving?
ALIEN: (Alien language)
NARRATOR: I see, you hired a go-kart from the intergalactic market.
Hello Finn.
ALIEN: (Alien language)
NARRATOR: What an impressive car. On Earth, that’s called a limousine. It’s a lot longer than Snoot’s go-kart isn’t it?
How long is it exactly?
ALIEN: Eh
NARRATOR: I’ve got an idea, you can estimate the length in steps.
The go-kart is ten steps in length and the limousine is 30 steps in length.
30 is three times ten. That makes the limousine three times longer than the go-kart.
ALIEN: (Alien language)
NARRATOR: I know Snoot. Counting things out in steps isn’t very accurate, it just gives you an estimate of how long things are.
If you want to know exactly, you’ll have to use a tape measure.
On Earth we use centimetres to measure quite small lengths, like the width of a tire, or the diameter of a wheel.
And we use metres to measure longer lengths, like the length of a car.
ALIENS: Ah ha!
NARRATOR: So, according to the tape measure, Snoot’s go-kart is two metres long, and Finn’s limousine is six metres long.
Six is three times two, so your estimates were right!
The limousine is three times longer than the go-kart.
Hello Plimble.
ALIEN: Hello.
NARRATOR: I see you hired a monster truck. I think we are going to need a bigger tape measure.
Description
Fin and Snoot estimate the length of their new cars, using centimetres and metres.
Now playing video 3 of 8
- 1:01

- Now playing1:54

- Up next0:55

- 0:36

- 0:57
