Numberblocks Season 4, Episode 21: Twenty-One and On

Fifteen's Minute of Fame

The Numberblocks put on a talent show full of terrific number tricks, but it doesn't quite go according to plan. Learn all about the numbers 1 to 15 with the Numberblocks.

On Your Head

When their numberlings fall off, the Numberblocks have to work out who they are and how numbers work. Learn about place value with the Numberblocks.

Ten's Place

Welcome to Ten's Place, where trainer Ten puts her friends through their paces with a high-energy number workout. Learn about numbers that are 'ten-and-a-bit' with the Numberblocks.

5 min

Balancing Bridge

It's all in the balance as the Numberblocks try to make it across a very wobbly bridge. Learn about adding with the Numberblocks.

5 min

Sixteen

Meet the really big square who always gets the party started: Sixteen! Learn all about the number 16 with Numberblock Sixteen.

5 min

Square Club

Things get totally out of hand at a Square Club meeting - until a certain someone arrives to save the day. Learn all about square numbers with the Numberblocks.

Seventeen

Meet the artist known as Seventeen, who likes to paint 17 of everything. Learn all about the number 17 with Numberblock Seventeen!

Eighteen

Meet Eighteen, the speedy super-rectangle who was born to ride the rays. Learn all about the number 18 with Numberblock Eighteen!

Loop the Loop

Super rectangle Eighteen shows the others how to ride the rays on the super-duper looper. Learn about numbers that can make rectangle shapes with the Numberblocks.

Nineteen

New Numberblock Nineteen discovers she's a one-off with a hidden talent for shape-shifting. Learn all about the number 19 with Numberblock Nineteen!

Twenty

Are you ready for the big dance number? Numberblock Twenty struts his stuff and dances the Two Tens Tango. Learn all about the number 20 with Numberblock Twenty!

Tall Stories

Are you sitting comfortably? Then we'll begin a bedtime story all about Numberblocks Sixteen to Twenty. Learn all about the numbers 16, 17, 18, 19 and 20 with the Numberblocks.

Flights of Fancy

Rocket Ten and friends blast off into space for a rhyming adventure to visit planets 11 to 20. Explore numbers 11 to 20 with the Numberblocks.

I Can Count to Twenty

The Numberblobs challenge Twenty to a singing count-off. Who can count to 20 in the most original ways? Learn how to count up and down and in steps with the Numberblocks.

Heist

Can Sixteen to Twenty use their special skills to sneak past the robot guards at the Museum of Numbers? Learn about the special properties of numbers with the Numberblocks.

Sign of the Times

Super-speedy Numberblock Eighteen discovers a faster way to add a number together lots of times. Learn how multiplication works with the Numberblocks.

Fun Times Fair

Super-rectangle Twelve helps the super-excited Numberblobs work out how many tokens they need for each fairground ride. Learn about multiplication with the Numberblocks.

The Lair of Shares

One and friends can only escape from the Lair of Shares by learning how to share and solving the puzzles inside. Find out about sharing and division with the Numberblocks.

Terrible Twosday

They came from outer space to divide the Numberblocks into Twos. Who can stop the invasion of division with the Numberblocks.

Divide and Drive

Three invites the others to her super new go-kart track, where you must divide into Threes to drive. Learn how division works with the Numberblocks.

We're Going on a Square Hunt

The squares explore an ancient temple in search of a really, really big square. Learn more about square numbers with the Numberblocks.

Thirty's Big Top

Welcome to the Big Top, where Thirty and friends show off their circus tricks. Learn about the numbers 30, 40 and 50 with the Numberblocks.

Land of the Giants

Five and friends discover a way to make themselves ten times bigger! Learn how to count, add and think in tens with the Numberblocks.

Fifty

Superstar Fifty rocks out the Numberland stadium with her shining gold guitar. Learn how to count up in fives with the Numberblocks.

Sixty's High Score

It's time to meet Sixty and friends in a rocket-powered game of How Many Tens. Learn all about the numbers 60, 70, 80 and 90 with the Numberblocks.

The Big One

One has found a way to keep adding Ones all the way to Ninety-nine. But what on earth comes next? Learn to count to 99 or so with the Numberblocks.

One Hundred

One Hundred shows us what she's made of in a big song about being big. Learn all about the number 100 with the Numberblocks.

One Thousand and One

One wonders if anyone could be bigger than One Hundred, and has a big think about some very big numbers indeed. Learn about huge numbers with the Numberblocks.

More to Explore

It's time for the grand finale but the number fun doesn't stop here: there's so much more to explore! Step into the wonderful, wider world of numbers with the Numberblocks.