Showing posts with label fraction. Show all posts
Showing posts with label fraction. Show all posts
Scribe Post for April 29th, 2009
Today we learned how to divide Fractions and some of it's differences from multiplying fractions.
Such as, what the two different math types say.
eg. 6 / 1/2 = this division question would say, how many groups of 1/2 are in 6
6 * 1/2 = this multiplication question would say 6 groups of 1/2
Homework:
We had 3 questions for our homework and we`d have to show how to do all of them 2 ways,
I`ll show photos on how to do the last 2 questions.
6 / 2/3 ,
1/2 / 1/4 ,
2 / 3/4 ,
Such as, what the two different math types say.
eg. 6 / 1/2 = this division question would say, how many groups of 1/2 are in 6
6 * 1/2 = this multiplication question would say 6 groups of 1/2
Homework:
We had 3 questions for our homework and we`d have to show how to do all of them 2 ways,
I`ll show photos on how to do the last 2 questions.
6 / 2/3 ,
1/2 / 1/4 ,
2 / 3/4 ,
Scribepost
Scribe post for April 23!(Fractions~)
On Thursday, we had a word problem about fractions...It was about Carrol Gardens and Flatbush. they both have an area of 100mx50m.
The question is...Who gets more hard top? Explain your answer... (pretend that you are explaining it to a person who doesn't know a lot about fraction...)
Carrol Gardens has: 3/4 playground 2/5 hardtop Flatbush has: 2/5 playground 3/4 hard top
Now we have to compare 2/5 to 3/4. But how???(I bet right know you could tell who had more hardtop right?but getting the answer isn't that important as to how you got the answer...)
There are a lot of ways to explain how you got the answer. Like...drawing a picture.
As you can see, 2/4 is more than 2/5. This is one way you can prove you're right...but is this really enough?Well if you can't draw... then you need to back up you answer with........decimals and
percents.
How do you convert fractions into decimals???
It's not that hard to do, just divide the numerator from the denominator.Like this:
2/5
2 divided by 5=0.4
3/4 3 divided by 4=0.75
Then compare..
You can see that 0.75 is larger than 0.4(or 0.40 it doesn't really make a difference, it just makes it more easier to compare)
This it another way you could show your thinking...There is one more way I could show you how you can show your thinking.It's making the denominators the same.Like this:
So now that you know that 2/5(8/20) is smallar that 3/4(14/20) You can say that Carrol Gardens has more hardtop than flat bush because 2/5(flatbush) is smaller than 3/4(Carrol Gardens)
The question is...Who gets more hard top? Explain your answer... (pretend that you are explaining it to a person who doesn't know a lot about fraction...)
Carrol Gardens has: 3/4 playground 2/5 hardtop Flatbush has: 2/5 playground 3/4 hard topNow we have to compare 2/5 to 3/4. But how???(I bet right know you could tell who had more hardtop right?but getting the answer isn't that important as to how you got the answer...)
There are a lot of ways to explain how you got the answer. Like...drawing a picture.
As you can see, 2/4 is more than 2/5. This is one way you can prove you're right...but is this really enough?Well if you can't draw... then you need to back up you answer with........decimals and
percents.
How do you convert fractions into decimals???
It's not that hard to do, just divide the numerator from the denominator.Like this:
2/5
2 divided by 5=0.4
3/4 3 divided by 4=0.75
Then compare..
You can see that 0.75 is larger than 0.4(or 0.40 it doesn't really make a difference, it just makes it more easier to compare)
This it another way you could show your thinking...There is one more way I could show you how you can show your thinking.It's making the denominators the same.Like this:
So now that you know that 2/5(8/20) is smallar that 3/4(14/20) You can say that Carrol Gardens has more hardtop than flat bush because 2/5(flatbush) is smaller than 3/4(Carrol Gardens)Scribe post for April 23
Sorry if I created my post 2 days later, but on Thursday we were assigned a question. The question was to see which park had more hardtop than the other (Carrol Gardens and Flatbush). The information contained that 3/4 of Carrol Gardens will be playground; 2/5 of the playground will be hardtop. For Flatbush, 2/5 of the lot will be playground; 3/4 of the playground will be hardtop. Both of the parks are 100m x 50m. Is one neighbourhood getting more than the other? Well, let's draw a picture.
Carrol Gardens:
If you divided Carrol Gardens into fourths of the park and colour 3/4 of it, that will be your playground. Then if you divided the playground into fifths and colour 2/5 of it, that will be your hardtop. The hardtop is 6/20 of the park.
Flatbush:
If you divided Flatbush into fifths and colour 2/5 of it, that will be your playground. Then if you divided the playground into fourths and colour 3/4 of it, that will be your hardtop. The hardtop will also be 6/20 of the park.
As you can see in the pictures, you'll have the same amount of hardtop. So, to the answer of my question... no, one neighborhood is not getting more hardtop than the other.
If my answer is incorrect, please feel free to correct. :)
BOB on Fractions
As you might know, we were able to get a bonus mark if we did a post on what we learned about fractions. So, this is mine...One thing I learned about fractions was adding them. I didn't know you were supposed to have a common denominator when you were adding them, but now I understand that the denominator must be the same when comparing two or more wholes. After all, you wouldn't compare a Blu-Ray player with a VCR, right? It just wouldn't make sense. The wholes must be the same size.
One thing I had difficulty with was using the 'borrowing' technique. I didn't quite understand it because it had initially confused me at first. Mr. H had said it was much easier compared to
changing a mixed number to an improper fractions and all that. But once I looked over the example a few times I finally understood what we were supposed to do when 'borrowing', and it really is much easier and less time consuming rather than changing the mixed number into an improper fraction. Just think about all the paper and graphite you'd be saving! ;)
Overall, I learned a lot about fractions. I never really enjoyed learning about fractions before but learning about the 'borrowing' technique has really begun to brighten my perspective on the whole subject. I hope this post isn't late!
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