Compose and decompose teen numbers

Teen numbers are special. Each one is made from one ten and some extra ones. Let's see how!

Here's the number fourteen. Let's break it apart and see what's inside.

First, we draw a ten — that's ten little ones all grouped together in one bar.

We call this whole group just... ten. One ten.

Then we add...

...four more ones, one by one.

That's four ones.

Together, ten plus four makes fourteen!

It works the other way too: ten and four ones always build fourteen.

Every teen number is one ten and some ones. Now you try!