- When a number can be divided by another number, with no remainders.
Divisibility Rules:
-Quick ways to determine if a number is divisible by another number.
Rule for 2:
- All even numbers are divisible by 2.
- Any number ending in 0, 2, 4, 6, 8.
Rule for 3:
- Add up all the digits until you have a single digit remaining. If that digit is divisible by 3 then the number is divisible by 3.
e.g 93 9 + 3 = 12
1 + 2 = 3 yes
273 2 + 7 + 3 = 12
1 + 2 = 3 yes
1045 = 1 + 0 + 4 + 5 = 10
1 + 0 = 1 no
Rule for 4:
- If the last 2 digits are divisible by 2 twice, then the number is divisible by 4.
e.g 4 divided by 2 = 2 2 divided by 2 = 1 yes
16 divided by 2 = 8 8 divided by 2 = 4 yes
10 divided by 2 = 5 5 divided by 2 = 2.5 no
- 2 x 4 = 8
2 x 2 x 2 = 8
- The rule for 4 is if the last 2 digits are divisible by 2 twice, then the number is divisible by 4.
Rule for 5:
- Any number that ends in 5 or 0 is divisible by 5.
e.g 155 is divisible by 5
8974 is not divisible by 5
Rule for 6:
- Any number that is divisible by 2 and 3 is divisible by 6.
Rule for 7:
- Use a calculator.
- There is no short cut for 7. Yet.
- You should find one, and name it after yourself.
Rule for 8:
- If the last 2 digits are divisible by 2 three times, then the number is also divisible by 8.
e.g 16 divided by 2 = 8. 8 divided by 2 = 4. 4 divided by 2 = 2 yes
18 divided by 2 = 9. 9 divided by 2 = 4.5 no
17948 48 divided by 2 = 24. 24 divided by 2 = 12. 12 divided by 2 = 6 yes
Rule for 9:
- Add up all the digits until you have 1 digit left. If that digit is 9 the number is divisible by 9.
e.g 18 1 + 8 = 9 yes
54 5 + 4 = 9 yes
468 4 + 6 + 8 = 18 yes
1 + 8 = 9
2345 2 + 3 + 4 + 5 = 14
1 + 4 = 5 no
Rule for 10:
- Any number that ends in 0 is divisible by 10.
e.g 1070 is divisible by 10
27367 is not divisible by 10
3604 is not divisible by 10
Rule for 0:
- Nothing is divisible by zero.
Quotient:
- The result of a division question.
e.g 12 divided by 2 = 6, the quotient is 6.
http://www.basic-mathematics.com/divisibility-rules-game.html
This is a link that has a divisibility game on it to test your divisibility knowledge.
If you are also having any trouble with other basic math stuff, there are also other games and problems to help you out.
Try to figure out the answers to these division questions to get better at division and divisibility.
REMEMBER TO WEAR BLACK TOMORROW FOR THE GYM RIOT!!
If there is any mistakes or questions, please feel free to ask or tell me.
Nice job justin ! I liked that you had a picture and a nice video . But the video was very boring i know its math but still . Nice job justin .
ReplyDeleteI wasn't there today but it looks like you guys learned alot. Good post next time try to and color and i agree the video is kind of boring.
ReplyDeleteGreat Job Justin! I like how you put a video, site, and a image.. but next time you should add more color for the keywords. I like how the image is practicing on dividing, but we haven't started yet on that. Thank You for reminding us about the gym riot, and wearing black. Good Job on your first scribe!
ReplyDeleteGood Job Justin,
ReplyDeletei liked the video and the picture.
i missed some of the notes. but now i got them because of you, thanks. (:
Good job Justin. Thanks for putting up the notes, looks like I missed a lot. I like how you found a link, video and an image. Also, your work was nice and organized.
ReplyDeleteGood job Justin!
ReplyDeleteI like how you used colors for certain things. Good job getting a video even though it was a little boring and a link also with a picture. You got everything down from what we did today.
Well you did alot of good things. It was great for your first one.
Good job Justin. I liked the way you mentioned the gym riot tomorrow. I also liked how you organized each section clearly and neatly. Good job on adding a game to play, and a video to help us with. Try adding colour to more words so that we will know what words we need to memorize well. Good job!
ReplyDeleteGreat job Justin!!!You put alot of effort in that scribe post!It took me a while to read all though but everything was great.Nice job on the video and thanks for the link.Keep up the good work!
ReplyDeleteGood job but, why are there division questions were not on that yet.
ReplyDeleteNicely done, Justin! I think you did a awesome job with this post and I can see you put alot of effort into this. I also think you did a good job putting up a pictuer, video and a link. Thanks for keeping everything neat and organized and keep on doing a great job!
ReplyDeleteGood job! I really like the video and the picture you put. It is very clear and easy to understand. Good Job!
ReplyDeleteGood job Justin, I liked the two colours you used, the spacing was nicely done , the video was great, the link was fun and helpful and thank you for reminding us for gym riot. Everything was neat and organized I understood it well, good job . (:
ReplyDeleteGood job Justin! I like how you spaced everything out so it was easy to read. Good job for putting a video, picture and link. But next time I suggest that you choose another color that stands out more. Well done for your first scribe.
ReplyDeleteGood job, Justin Lorenzo :)
ReplyDeleteI really liked how nade everything organized, but you should try shortening it :)
Great job Justin. I liked how it was really organized and neat. I also liked how you didn't put a lot of colours that would hurt our eyes. Great job. I don't think you missed anything. Good job on adding a link, video, and an image. Great job!
ReplyDeleteGood Job Justin, everything was organized and easy to understand. The link was helpful but the video was kind of boring. I liked the image that you put. I think I missed some of the notes so thank you for posting all of it.
ReplyDeleteanyways good job. :D
Good job Justin! Everything's very organized and thank you for putting all of the notes we took because i missed some things. The video was good and the picture you put on could really help.
ReplyDeleteGreat job Justin!
ReplyDeleteIt's good that you got a video and a link with some pictures. Good job having color for just titles. I am also glad that you have all the work that we did.
great job and i like your pictures
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteGood job. The video was kid of boring though, but other than that the blog wqas great.
ReplyDeleteGreat job Justin! The notes are really organized great job.
ReplyDeletegreat job!! everything is well organized and neat!
ReplyDelete-Late Comment-
ReplyDeleteGreat Job Justin! Everything was neat and organized. Thanks for putting the video. Helped me. :)