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A fun problem from openmiddle: Using the digits 1-9 each exactly once, create three 3-digit numbers where their sum is as close to 1,000 as possible. Here's why it's impossible to get exactly 1,000.

21,194 просмотров • 2 лет назад •via X (Twitter)

Комментарии: 10

Фото профиля Adam
Adam2 лет назад

Thanks, Howie! I use this problem every year with my preservice teachers. We’ve hypothesized that 1000 was not possible but our reasoning never led to a formal proof. Thanks for sharing your proof!

Фото профиля Howie Hua
Howie Hua2 лет назад

You're welcome, Adam! :)

Фото профиля kellsm
kellsm2 лет назад

You’re a Badger! Totally distracted by your Wisconsin shirt 🤣

Фото профиля Howie Hua
Howie Hua2 лет назад

I wish!

Фото профиля Mrs. LaRock📘🍸
Mrs. LaRock📘🍸2 лет назад

These "Close to 100" and "Close to 1,000" games were a big part of Investigations Math. I do these activities for 'fun' at the end of a math period.

Фото профиля Jeremy
Jeremy2 лет назад

Miss you Howie! Great video 😊

Фото профиля Howie Hua
Howie Hua2 лет назад

I miss you too! Sad I didn't get to see you when I was in Wisconsin last week!

Фото профиля Rik
Rik2 лет назад

134+297+568=999

Фото профиля little grey mouse 🐭
little grey mouse 🐭2 лет назад

125 376 498 ---- 999

Фото профиля Thomas Mounier
Thomas Mounier2 лет назад

I love this proof thanks

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