Is a number divisible by 7? Divisibilty rule of 7

Is a number divisible by 7-
A shortcut to see if a number is divisible is as follows,
Take the last number and double it.
Subtract this number from the remaining number.
If this number is divisible by 7 or is 0 the entire number is divisible by 7
This divisibility rule will help save you some time.

[annoyingkraken]

That explanation was really very nice. Thank you! Many of the divisibility rules are nice, but I'm finding that divisibility by 7 of large numbers is easier when I just go ahead and divide the number.

[bellaa]

Bless this video! I tried watching other videos to learn the divisibility, but they were all so confusing! It was straight to the point and so easy to understand!!

[ijustwannabeadrummer]

I just learned this method 1) multiply the last digit by 5 and then 2) add the remaining numbers and that tells you if its divisible by 7
So the number 105 ... multiply last digit x 5 = 5 x 5 = 25 plus the remaining digits 10 ... 25 + 10 = 35 which is divisible by 7

[chantalhenderson]

Isnt it much quicker to divide a number by 7.

[mariahvlogs]

Thank you so much! This really helped me for my math. Im homeschooled. And then again, thank you!

[barfeeli_baatcheet]

Very very thank you I topped my maths exam because of you.Thankyousomuch

Watching your Video from India
🇮🇳🇮🇳JAI HIND🇮🇳🇮🇳

[jeffw]

2023 is easy to divide by 7 mentally. 21/7 = 3, so 2100/7 = 300. I subtract 77 to get the required 2023, so the quotient is (2100/7) - (77/7), or (300 - 11), or 289. It took me maybe three seconds to calculate directly. It is not hard if you practice regularly.

[EyeGuy]

Thanks so much
I have my maths exam after tomorrow this will sure make me fast in division!!

[nonememe]

Thank you so much! I have a Math test in awhile thank you so much this is the most confusing one yet for me.

[jaffardar_]

Thankyou sir it's very helpful for me
Lots of Love and respect from pakistan🇵🇰

[vandanajaiswal]

Wow how clearly you told I understood!!

[studywithfundamentals]

your explanation is on the point and very simple to understand, thank you so much

[Ruhal]

What about 119. If we multiply 9 × 2 = 18, and if we 18 from 11, 11-18 = -7. So what about negetive numbers? Do they follow the same rules?
I know it's 6 years old and i don't think u will help...

[skyhighhigh]

Very clearly explained. Helped me a lot.

[touhidarahman]

Thank you so much, this will help for my Math Homework!!!

[ManojKumar-lged]

7 divisibility rule was very hard I never got it but after watching this video I understood it all😊😊😊😊👍🏻👍🏻👍🏻👍🏻

[aanchalagarwal]

Its very helpful for me and I understood it very clearly thanks a lot to you.

[keelieninja]

Thank you! I am studying for a quiz and this helped!

[v.tarika]

It was easy to understand. Thank you for making this video 😍

[Nickel]

Thank you! I never forget divisibility of 7