A 1000-Year-Old Trick for Testing Divisibility by 37 Using Casting Out Nines

A 1000-Year-Old Trick for Testing Divisibility by 37 Using Casting Out Nines

Wrath of Math via YouTube Direct link

Intro

1 of 11
Next

1 of 11

Intro

Class Central Classrooms beta

YouTube videos curated by Class Central.

Classroom Contents

A 1000-Year-Old Trick for Testing Divisibility by 37 Using Casting Out Nines

Automatically move to the next video in the Classroom when playback concludes
  1. 1 Intro
  2. 2 Casting out 9s
  3. 3 Why Casting out 9s Works
  4. 4 Another Example
  5. 5 Modular Congruence
  6. 6 Merely a Check
  7. 7 Division
  8. 8 Remainders with 3
  9. 9 Casting out 11s
  10. 10 Divisibility Rule for 37
  11. 11 Conclusion

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free
Someone learning on their laptop while sitting on the floor.