Monday, November 1, 2010

Dividing decimals using estimation

Dividing Decimals using estimation.

Here are some examples to help you:


Pens cost $0.40


You have $6.00


Estimate how many pens you can buy. Show your thinking.

You have to make it easier for you to estimate so change $0.40 to $0.50, then now do $0.50 divided by $6.00 = 12, and if that's to hard for you then just do 5
divided by 60=12.



But you can really buy 15 pens with $6.00 if 1 pen cost $0.40.



Here is another example. You have to place the decimal in the correct position.


a) 15.4 divided by 3.6= 427778. Now lets make it easier change 15.4 and 3.6 to a easier number to divide. Now look at the example on the right side. Since the answer is 5 the decimal goes after 4 since its close, 4.27778.

33 comments:

Ace8-17 said...

Great Job Jewlz! I like that you explained it so we can understand it easily. I suggest that you also put a video so that some people that dont like to read can listen to an example of what we did today. Anyways, good job on your scribepost!

PS: Finish you scribe post earlier so that people can comment on it before they go to bed.

Jenny816 said...

thanks joey , this will really help me in the future.

jaydin873 said...

awesome joey!! But you should add a video for a little easier explanation

Shari873 said...

Thank you Joey.
You should add a video for explaining this for the classmates for in the Future.

Nikko772 said...

Great job Joey! The explanation was really good.It will really help the other students.

raeesa814 said...

good job .. but next time you should put a vidio on your scribe so they can get a better idea of it.

melina814 said...

good job joesph ! you should maybe add a video and more colors to your scribe post.

Riley 906 said...

nice post I think that will help me

angela816 said...

Thanks, good job! But I suggest you should include a video from youtube.

samantha8-14 said...

great job on the video !!! but you could have added an video too to make it look interesting but other than that it's good!!

Anonymous said...

Yeah great job on the scribe post but you should add a video

Terence said...

thanks this will really later on

gerard816 said...

Thanks for this scribepost, Joey! The drawing really help me understand this but you could have added a video too for help.

alyshiad814 said...

nice job joseph! this will really help me later on.

GurpreetS9-05 said...

Good job Joey but you should and a video and try to do it a bit early.

Anita8-17 said...

Good job! But you could have added a video.

danicka814 said...

good job! but you you should add a video on it.This will help me.

Caleb772 said...

good job but a video would be better. this helped me. thanks.

Taylor 7-72 said...

thanks joey this really helped me ! maybe add a video

Alexia873 said...

this will really help me in the future thanks joey

elijah772 said...

Thanks Joey that really helped me alot.

Jada 9-05 said...

Great job, but try to do it earlier

Camille873 said...

Great job, Joey! next time, put a video. Thank you, this scribe post really helped me

michael8-17 said...

Good job joey. You had lots of info and explained it well. When you made your picture you could of showed how you got the answer. But anyways you did a Great job.

Shera816 said...

thanks joey. the explanation was really good, it made a lot of sense.. a video would've been good too but you did a great job anyway.

sheila814 said...

Thanks joseph!
you helped me alot,it made me understand this question, i video would've been great but great job

sheila814 said...

Thanks joseph!
you helped me alot,it made me understand this question, i video would've been great but great job

Dom817 said...

Good job Joey! I really understand your scribe post! This will Help me in the future!

elijah772 said...

Thanks Jewls, that helped me alot about dividing decimals and make sure you get your scribe post up earlier.

elijah772 said...

Thanks Jewls, that helped me alot about dividing decimals and make sure you get your scribe post up earlier.

elijah772 said...

Thanks Jewls, that helped me alot about dividing decimals and make sure you get your scribe post up earlier.

Ashley772 said...

Wow great post!!! You explained it very well thanks! This is really going to help me in the future! A video would've helped more though.

Nicole772 said...

Good Job Joey ! This will help me in the future.