Divisibility Rule of 7 | Is It Possible to Divide by Seven? | 5th Grade Math?

Описание: Awful 4’s divisibility rule video:    • Divisibility Rules: 4 | When You Can Divid...  
Slightly less awful divisibility rule video:    • Ultra Divisibility Rules to Help You Divid...  

0:34 easy warmup
1:14 a three-digit number
2:28 a four-digit number
3:10 (Greater Gator’s Class)

I don’t even have to tell you how many avocados out of five avocados I rate this life skill. Other than the days of the week, there really isn’t a whole lot in our everyday lives that hinges on multiples of seven. Nonetheless, I will do it justice because this one divisibility rule is actually a pretty cool hack. Can you eyeball a big number and tell me if it is divisible by seven? If not, and I certainly didn’t learn this in grade school, buckle up because this is your ticket.

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Job 38:4-5

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