Tuesday, October 27, 2009

Dividing Decimals

Why we estimate

-to get close to the answer.

-is to make the problem easier.

-is to know what to expect from our calculation.



What I estimate and calculate should be close.

1.36 L of O.J. there is for of you.

a) estimate how much you each get.

b) calculate how much you each get.

2.0 divided by 4 would equal 0.5 and that is 1/2 over estimating.

1.0 divided by 4 would equal 0.25 and that is 1/4 under estimating.

1.3 divided by 4 would equal 0.3 (0.36)

1.6 divided by 4 would equal 0.4 (0.46)

or you could use long division
o.34
41.36
-0
______
1.3
-12
______
16
-16
______
0

So then the answer would be that each person would get 0.34 L of O.J.
Here is the next question.
24.6
373.8
-6
______
13
-12
______
18

The answer would be 24.6
Here's a good website you could find more about how to divide decimals http://www.coolmath.com/prealgebra/02-decimals/10-decimals-dividing-by-decimal-01.htm
This is a video on dividing decimals.

This is our home work.
5.4 divided by 0.6
Use number line and estimating and long or short division.

29 comments:

  1. Good job Cameron. That was pretty good for your first post. Keep up the good work. :)

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  2. Well done Cameron! I like the website that you put, and the video went well with the topic. But next time try to add more color and try finding a picture.

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  3. Good job Cameron. That was pretty good for you first post. Keep up the good work.

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  4. Great colours, video, website but try to look for a picture next time.

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  5. Good Job Cameron, i like how you put a website. i also like the video it was really interesting

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  6. Good job Cameron, the videos pretty good.

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  7. Good job Cameron. Very good for your first post! The website is helpful and you used the color well. Remember a picture next time.

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  8. Great job Cameron! Keep up the great work, but for next time try to add a picture. But great start.

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  9. Awsome Job Cameron!You did a good job for your first post!Remember to keep up the Good Work and stay Focus! :l

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  10. nice video but the next time try to make a video shorter and less grade 9.

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  11. great job Camron!! you did a good post keep up that good work. try to add a picture that show this information k camron but still great job . :D

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  12. good job cameron ! thanks for the homework check. i really lik the video and the link. next time try and add a pic. good job !

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  13. Good job, Cameron. You should try posting a picture as well, but you still did good (:

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  14. This comment has been removed by the author.

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  15. Good Job Cameron ! you did very well, and it was all clear. But the video was not realy what we learned. We did not learn 0:00-1:45 so you should have tried to find a diffrent video. Overall everything was good. :)

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  16. VERY good job Camren really perfect for your first post and well job on the video and showing us our homework.But next time put a
    picture!
    but Fantastic Job Camren !!!

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  17. Nicely done Cameron! Everything is good and thanks for reminding me about the homework! Next time you should post an image though.

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  18. Well done Cameron! i really like how you found a website, it really helps. Next time try to add an image

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  19. great job cameron!! I really like the website but yah maybe try and get a image but other than that great job.

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  20. good job cameron i like that you used color. but try to get a image next time

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  21. Good job Cameron, i think the video was interesting. But next time i think you should try and look for an image to match your topic.

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  22. Good job Cameron!! nice job with your very first post but i think you should add an image so that it will look better.

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  23. Good job Cameron!!!! I agree with faye you shuld put a photo but still nice work.

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  24. Nice job Cameron! I really liked your post but find some images if you can next time.Anyway good blog!

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  25. Good job Cameron! I liked how you made the words "estimate" and "calculate" the colour blue to emphasize them as key words. I like the video you posted! It was very understanding. Good job!


    (Sorry for commenting late, my last comment did not post properly, so I had to do it again.)

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  26. Good job Cameron! I also liked how you made the words "estimate" and "calculate" the colour blue to emphasize them as key words.Good video but next time put a picture.

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  27. Good job Cameron. The video helped me alot. I forgot that you have to move the decimal two digits to the right.Now I Know how to divid decimals properly.

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  28. Nice job Cameron you have really been paying attention in class.

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  29. Great Job Cameron! I liked your link. I liked the video, but I thought it was too long. Next time put an image and use more color. Good Job!

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