Tuesday, February 22, 2011

Divisibility Rules

Today we learned about Divisibility rules .

Dividing by 2

All even numbers are divisible by 2. all numbers ending in 0,2,4,6 or 8.

Dividing by 3

The sum of all the digits should be divisible by 3.

Dividing by 4

The last two digits of the number should be divisible by 4.

Dividing by 5

If the number ends with 0 or 5.

Dividing by 6

If the number is divisible by 2 or 3 , it is also divisible by 6.

Dividing by 8

If the last three digits is divisible by 8.

Dividing by 9

Add up all of the digits , the sum should be divisible to 9.

Dividing by 10

If the number ends with 0 , it is divisible by 10.



I hope this helps you !

11 comments:

Ian814 said...

Nice job Jeremy. One thing you forgot was Divisibility by 0 and 1, also you might wanted to put a video. Anyways great job.

Priya873 said...

Great job. You did great, but you maybe should of added a video or a picture. This help a bit, thanks.

Amiel816 said...

Good Job, you forgot about 7.

Carlor 8-14 said...

Great Job Jeremy. I suggest that you should change the color of all the important words so that it would stand- out. You should also add 1, 7 and O although they don't have divisibility rules. Good job though!

Jackie8-16 said...

Good job Jeremy! I thought you explained the divisibility rules clearly. I thought you could of added examples in a picture or examples of getting the divisibility easier to understand. You also could of added a video and a link.

Anmarie816 said...

Good job Jeremy!! You did a very good job with explaing the rules from 2 to 10 I agree with Jacqueln, you should have put a link to help us remember the rules and put a video or and a picture for an example.

Mary816 said...

Good Job Jeremy! I like how you explained the rules, but as people said, you forgot 0, 1, and 7. Even though 0 is no number and 1 is every number and 7 you have to use a calculator you should still put it on so when other people from other places look at the blog, they don't think " oh what about 0,1,and7? " and things like that. But good job!

joshL814 said...

Good job Jeremy! I like how it is easy to understand and it really helps. However, you should highlight the important words so it really stands out. Next time, you should also put a video and a link to support the topic. Great job though.

hendrix817 said...

good job Jeremy for putting the divisibility rules for a few numbers,but you forgot to put 1- every number is divisible by one 7- you have to use a calculator.

ghelo8-14 said...

good job jeremy but you forgot some of them you might want to use a diagram or video to help

Anonymous said...

Good job Jeremy. I like that you explain the divisibility rules. Next time put a video, link, and pictures.