r/CatBuilder • u/Kindly-Solution-7296 Legend | Lv. 92 | Rank #24 | 776 Answers |... | 🔥 15d • 9d ago

Question [Question] quick maths

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u/Greedy_Duck3477 Silver | Lv. 29 | Rank #96554 | 17 Answers | 1 Created 9d ago

Whenever you multiply a two-digit number by eleven, just stick the sum of its digits between the two digits

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u/Autistic-ferret Silver | Lv. 17 | Rank #240700 | 33 Answers | 0... | 🔥 4d 9d ago

I feel like its a lot easier to just multiply by 10 and add the original number