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Twenty-One and On is the 21st episode of the fourth series of Numberblocks. It is the 81st episode overall.
Synopsis[]
Twenty and chums find out what happens if you go past bus stop 20.
Plot[]
The episode begins with Twenty driving One, Two, and Three past Stop 20. The Numberblocks are ready to explore as they go down the beach, but Twenty and One stumble.
20 + 1 = 21
Twenty-One introduces themselves to Two and Three. Two, confused, points out that Twenty-One has two faces. They reply that they can think big numbers as sums of two smaller ones, hence their name. Twenty-One is two Tens and one One. They can also be 7 × 3 or 3 × 7. The Sevens spot four ice cream cones on a treasure chest on a boulder. They add back up to a step-shaped 21 and Two gets the ice cream cones for the blocks. That's when Twenty-One learns they're a 6-step shape.
They learn that they love figuring things out, including themselves. This makes them come to a realisation, and they figure themselves out. Twenty-One transforms from a compound to an individual Numberblock, being a number explorer. Eager to find what happens next, Twenty-One spots a magic mirror, duplicating herself to subtract back to Twenty and One.
20 + 2 = 22
Twenty-One spots Twenty-Two as two Tens and two Ones. Two hops on Twenty and Twenty-Two finds out that they are two Elevens, figuring themselves out as two football teams. The Elevens, one red and one blue, split into Ones of their respective colours and play a game of football throughout the day. After that, it is Three's turn.
20 + 3 = 23
Twenty-One tries to figure out Twenty-Three, but they say they like how they are. The Numberblocks get back on the bus and get ready to explore some new numbers.
Characters[]
- One
- Two
- Three
- Four
- Five
- Six
- Seven
- Ten
- Eleven
- Twenty
- Twenty-One (compound and figured-out debut)
- Twenty-Two (compound debut and figured-out debut)
- Twenty-Three (compound debut)
Math Magic[]
- 20 + 1 = 21 (segment)
- 21 = 2 × 10 + 1
- 2 × 10 + 1 = 21
- 21 ÷ 3 = 7
- 7 × 3 = 21
- 21 ÷ 7 = 3
- 3 × 7 = 21
- 21 = 1 + 2 + 3 + 4 + 5 + 6
- 1 + 2 + 3 + 4 + 5 + 6 = 21
- 21 - 1 = 20
- 20 + 2 = 22 (segment)
- 22 = 2 × 10 + 2
- 2 × 10 + 2 = 22
- 22 = 2 × 11
- 11 = 11 × 1
- 11 × 1 = 11
- 2 × 11 = 22
- 22 - 2 = 20
- 20 + 3 = 23 (segment)
- 23 - 3 = 20
Trivia[]
- The magic mirror is used again in this episode when a new Numberblock (in this case, Twenty-One) debuts. The last time it was used for such purpose was in Eleven.
- This episode marks the debut of Twenty-One in her figured-out form.
- This is the second episode where a compound doesn't get figured out the same episode they debut in (in this case, being Twenty-Three), the first being Twenty-One in I Can Count to Twenty. Unlike Twenty-One, Twenty-Three’s personality as a figured-out Numberblock was foreshadowed in this episode.
- Twenty-Two is the first Numberblock to figure themselves out in their compound debut, the second being Twenty-Five.
- This is the first episode where a Numberblock doesn't sing in their debut episode.
- This the first Green Level Four episode in the Numberblocks curriculum, since I Can Count to Twenty is not considered a Green Level 4 episode.
- This is the first time Twenty becomes an addend in addition magic.
- This is the 21st episode of Series 4. Coincidentally, figured-out Twenty-One debuts in this episode.
- Hopster names this episode “Twenty-One, Twenty-Two, and Twenty-Three Too”, while the Spanish dub calls it just “Twenty-One”.
Errors[]
- After Twenty-Two introduces themselves in compound form, Three's juggling balls are orange.
- Debatable error: After Two puts himself to the top (Which was before Twenty-Two got fully introduced), Twenty's array display disappears.
Gallery[]
See here.