Q&A - P5 Math

[Essential]

Hi does anyone one have the complete question for Rosyth school sa 2 -2010 question 22. Our paper is not clear.

[MathIzzzFun]

Winx5015:

http://i52.tinypic.com/154j7o3.jpg\">

Hi

http://i51.tinypic.com/2qs857o.jpg\">

each side of square C = 2 cm... I think you can continue from here

cheers.

[pixiedust]

Appreciate any help regarding angle y :

Source : AiTong 2010 P5 SA2 P2 Q14

http://i1197.photobucket.com/albums/aa424/pixie_dust8/mq2-1.jpg\">

[PiggyLalala]

pixiedust:

Appreciate any help regarding angle y :

Source : AiTong 2010 P5 SA2 P2 Q14

http://i1197.photobucket.com/albums/aa424/pixie_dust8/mq2-1.jpg\">

hi pixiedust,

for questions involving folding of paper, the hidden information is the angle the base(on the right) is also 78 degree. Hope you can understand what i am trying to say

[notfreemom]

Superbugs:

[quote]

Essential:

Hi, anyone can help.

Question 15) 608 Children took park in a skipping competition. Altogether 110 glod awards were presented to 1/5 of the boys and 1/7 of the girls. How many boys took part in the competion?

Q15) My DD solution:

Equation 1: 5b+7g=608
Equation 2: 1b+1g=110 ---->x 7
7b+7g=770
2b= 162
1b=81
5b=405[/quote]Hi,
my dd got the same answer too which is 405. The answer given is 110. Thus, is the answer 405 correct?

[pixiedust]

Piggylalala, thanks for your help…let me digest digest, at the moment still can’t see it.


Notfreemum, my answer key shows 405. It is correct answer, you can do a back check.

[PiggyLalala]

pixiedust:

Piggylalala, thanks for your help....let me digest digest, at the moment still can't see it.


Notfreemum, my answer key shows 405. It is correct answer, you can do a back check.

Try unfolding the paper.hope you can see the angle next to the 78 degree, on its right, is 78 degree too

[pixiedust]

Ah, yes! I managed to get the correct answer, thanks piggylalala!

[elkniwt]

Hi,


Your dd's ans is correct. I think there must be a mistake with the answer key.

notfreemom:

Superbugs:

[quote]

Essential:

Hi, anyone can help.
Question 15) 608 Children took park in a skipping competition. Altogether 110 glod awards were presented to 1/5 of the boys and 1/7 of the girls. How many boys took part in the competion?

Q15) My DD solution:

Equation 1: 5b+7g=608
Equation 2: 1b+1g=110 ---->x 7
7b+7g=770
2b= 162
1b=81
5b=405

Hi,
my dd got the same answer too which is 405. The answer given is 110. Thus, is the answer 405 correct?[/quote]

[Winx5015]

Thanks MathIzzzFun. The answer is 104cm, is this correct?


Cheers