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Maths year 11

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Reply 40
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z_o_e
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11
Original post by 34908seikj
How 'bout now?


Clear! Thank youu!

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Original post by z_o_e
Clear! Thank youu!

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keep dem questions coming fam.
Reply 42
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z_o_e
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11
Original post by 34908seikj
How 'bout now?


Will you be able to make me an example question in a similar way?

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Original post by z_o_e
Will you be able to make me an example question in a similar way?

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http://www.mrbartonmaths.com/gcsetakeaway.htm

http://www.mrbartonmaths.com/resources/GCSE%20Revision/GCSE%20Maths%20Takeaway/4.%20Grades%20B%20to%20A-star/92_tree-diagrams.pdf
Reply 44
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z_o_e
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11
Original post by 34908seikj


Omg thank you so much! This link is so helpful.

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Original post by z_o_e
Omg thank you so much! This link is so helpful.

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http://www.examsolutions.net/maths-revision/syllabuses/GCSE/period-1/Higher/module.php

http://www.mathsgenie.co.uk/gcse.html

http://www.themathsteacher.com/gcse_maths.php

https://mathswebsite.com/gcse

You might find these just as helpful.
Reply 46
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z_o_e
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11
Original post by 34908seikj


THANK YOU VERY MUCH!

can you please check this :smile:



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1466102381749.jpg35.7KB
Original post by z_o_e
THANK YOU VERY MUCH!

can you please check this :smile:



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Not drawn to scale, but that's the sort of shape it should be.

Reply 48
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z_o_e
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11
Original post by 34908seikj
Not drawn to scale, but that's the sort of shape it should be.



Oh :/

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The line between A and B should be exactly halfway - no need to use LOCI to find the middle, the measure the length and half it!
Reply 50
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z_o_e
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11
Original post by 34908seikj
The line between A and B should be exactly halfway - no need to use LOCI to find the middle, the measure the length and half it!


Thee First question

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1466103703605.jpg222.7KB
Reply 51
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z_o_e
OP
11
Original post by 34908seikj
The line between A and B should be exactly halfway - no need to use LOCI to find the middle, the measure the length and half it!



I got this but I'm not sure.

As isn't 1 percent divide by 100?

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1466103849944.jpg30.6KB
Original post by z_o_e
I got this but I'm not sure.

As isn't 1 percent divide by 100?

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Is this calc or non calc? I just used calc, but I can do it non calc if you like.


Reply 53
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z_o_e
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11
Original post by 34908seikj
Is this calc or non calc? I just used calc, but I can do it non calc if you like.




I'm trying to find them mentally. But I kind of understand now it's just that my teacher confused me with this method. I don't know which method to use.

We did this today.


This is how I did it... I got it wrong ..

This is sirs method


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1466104137237.jpg65.3KB
1466104174680.jpg57.7KB
Original post by z_o_e
I'm trying to find them mentally. But I kind of understand now it's just that my teacher confused me with this method. I don't know which method to use.

We did this today.


This is how I did it... I got it wrong ..

This is sirs method


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The first one, you increased it by 20%, when it actually asked for a reduction of 20% (take away 20%), likewise with the second one you have increased the value when I presume you need to decrease it.

1200 reduced by 20% is 960 - You can work this out by doing 1200*0.8. 0.8 because you want 80% of the total value. You just divided it by 80. - that's not how percentages work.

- At least I think that's what you're supposed to do, I couldn't tell what the question was on the second image.
(edited 7 years ago)
Reply 55
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z_o_e
OP
11
Original post by 34908seikj
The first one, you increased it by 20%, when it actually asked for a reduction of 20% (take away 20%), likewise with the second one you have increased the value when I presume you need to decrease it.

1200 reduced by 20% is 960 - You can work this out by doing 1200*0.8. 0.8 because you want 80% of the total value. You just divided it by 80. - that's not how percentages work.

- At least I think that's what you're supposed to do, I couldn't tell what the question was on the second image.


Ohh the second image is the same question.

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Reply 56
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z_o_e
OP
11
Original post by 34908seikj
Is this calc or non calc? I just used calc, but I can do it non calc if you like.




Can you do this question one neatly please as an example.



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1466106130229.jpg49.4KB
Original post by z_o_e
Can you do this question one neatly please as an example.



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Reply 58
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z_o_e
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11
Original post by 34908seikj


Where did you get 1.1 from?

It Increases by 10%

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Original post by z_o_e
Where did you get 1.1 from?

It Increases by 10%

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You want to add 10% on the 5000

10% as a decimal is 0.1

and 100% as a decimal is 1

If you were to add 10% of 5000 back onto the 5000, you would have 110% of the original value

Therefore we multiply by 1.1 as 110% = 1.1

When you want to increase by a percentage aways have the value larger than 1, as it accounts for your current value. want to increase by 58% = 1.58, increase by 240% = 2.4 etc. etc.
(edited 7 years ago)

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