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"We have to get the Double Back to stop!"Ones
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Where did 64 go?
 

Twenty-Five

Double Back is the second special episode of Numberblocks. It is the second Learningblocks special overall.

Synopsis[]

It's time for a time travel adventure! Sixty-Four's new time machine keeps sending the Numberblocks back in time. Can they double up in time to fix it?

Characters[]

Math Magic[]

  • 13 - 3 = 10
  • 2 + 2 = 4
  • 10 + 3 = 13
  • 4 + 4 = 8
  • 8 + 8 = 16
  • 16 ÷ 4 = 4
  • 4 × 4 = 16
  • 16 + 16 = 32
  • 32 ÷ 16 = 2
  • 2 × 16 = 32
  • 32 + 32 = 64
  • 64 ÷ 32 = 2
  • 16 ÷ 8 = 2
  • 8 ÷ 4 = 2
  • 4 ÷ 2 = 2

Trivia[]

  • This episode's description used to show that it's a crossover with Alphablocks, but it was later removed.
    • This tweet from the Numberblocks Twitter gave the impression at the time that this was a mistake, and that there wasn't going to be any crossover special, at least not in the near future. However, crossover specials between Alphablocks and Numberblocks have come out since then.
  • This episode was put on iPlayer on Friday, two days before it aired on TV.
  • This episode's logo is a parody of the movie "Back to the Future".
    • Sixty-Four's time machine is a parody of the DeLorean car.
  • This episode has a time-travel plot, where a certain character travels back in time to change an event in the past.
    • The type of time-travel featured in the episode is a time loop, where the main character gets sent back 2 minutes in the past, in an altered timeline, with the only difference being that the main Numberblock is twice their size. This repeats until Sixty-Four is the one heading to Sixty-Four's time machine, to plug the time regulator.
    • There are a total of six different timelines in the episode.
  • This is the fourth episode to teach about doubling and halving. First being Double Trouble, second being Sixteen and third being Snow Day Doubles.
  • This episode marks the debut of the square root sign and the decimal point.
  • Sixty-Four is the biggest Numberblock in this episode, and is the biggest Numberblock to appear in any of the specials.
  • Thirty-Two says the name of the special when she comes back for the regulator.
  • The episode uses dynamic physics in some parts such as when Ten and Three fall into the ball pit and some of the balls roll out.
  • The shoe shop from Two Times Shoe Shop, and Octonaughty's lair from Now in 3D have cameo appearances in this episode.
  • In this episode, Three still has the rubber duck from The Lair of Shares.
  • If you look in the credits, Sharon Clarke and Rasmus Hardiker are credited.
  • This special establishes yet another urban area the Numberblocks live in, akin to the Big City from The Wrong Number or the city seen in Odd Side Story.
  • Prior to 2022; American Xfinity televisions count this episode as a show and this being ”Numberblocks: Double Back - S1E1".

Video[]

@Numberblocks-_Double_Back!_🔭🔮-_Full_Episode_-_Learn_to_Count


  1. Fifty-Eight only appeared as a number, but was mentioned by Two at the start of the special.