2011 PSLE Discussions and Strategy

[Tinkerbelle]

Cheerfuldad:

ngbrdad:

[quote=\"Cheerfuldad\"]Hi all,


Did any of your DS/DD do the Henry Park Pri Sch 2011 Prelim paper? What is the answer for Q23 & 24?

Which subject ? science ?

Hi ngbrdad,

Yes, science.

Thanks[/quote]Hi Cheerfuldad,
Q23: Answer is (3)
Q24: Answer is (4)

[Tinkerbelle]

vidhyalog:

Hi - For Henry Park 2011 Science Prelim - Booklet A Q 21 - could someone confirm if the answer sheet answer of (1) (ie 4 populations) is correct?


Also for Qn 43B - Which of the Materials A,B, or C would be the most suitable for making safety vests for cyclists what would be the answer?

Thanks

Hi vidhyalog,
For Q21, the answer (1) is correct. There are 4 animal populations. Hibiscus & Ixora are plants.

For Q43B, the answer in the answer key is Material A. It reflected the most light.
However, DD's answer is Material C. It reflected light at the furthest distance from the light source. So....:scratchhead: Any other input?

[Vanilla Cake]

ms_lim:

I do not hv the ans key for 2011 acs prelim Maths paper 2. Can let me know what is the ans for qn 9? I think there is insufficient info to solve qns 10 and 12a, correct?

Hi ms_lim,

For Q10, Angle for the \"Dogs\" is 120 degree.

For Q12(a), pls refer to the diagram below:
http://i53.tinypic.com/20kx9iv.png\">

Answers for 2011 ACS P6 Prelim Maths Paper 2
Q1 - 3000 words
Q2 - 18 m
Q3 - 243.9 cm (correct to 1 decimal place)
Q4 - $22.25
Q5 - 277 degree
Q6 - 3 h
Q7 - 1596 green T-shirts
Q8 - Tessellation question - should be no problem for you
Q9 - $15
Q10 - (a) 7/24 (b) 150 more pupils
Q11 - 91 egg tarts
Q12 - (a) Angle x = 58 degree (b) Angle y = 26 degree
Q13 - 77 chairs
Q14 - 4 revolutions
Q15 - 75 km/h
Q16 - (a) 1/10 (b) 108 rulers
Q17 - (a) 4000 cm3 (b) 8 cubes
Q18 - $207

[Alchemist]

Tinkerbelle:

vidhyalog:

Hi - For Henry Park 2011 Science Prelim - Booklet A Q 21 - could someone confirm if the answer sheet answer of (1) (ie 4 populations) is correct?


Also for Qn 43B - Which of the Materials A,B, or C would be the most suitable for making safety vests for cyclists what would be the answer?

Thanks

Hi vidhyalog,
For Q21, the answer (1) is correct. There are 4 animal populations. Hibiscus & Ixora are plants.

For Q43B, the answer in the answer key is Material A. It reflected the most light.
However, DD's answer is Material C. It reflected light at the furthest distance from the light source. So....:scratchhead: Any other input?

Thanks Tinkerbelle. I also did not read the question properly for Q21 - cannot blame my son!

For 43B - my son also wrote C - as it reflected light at the farthest. Any other parents care to share?
Thanks

[ms_lim]

Dear Vanilla Cake, :thankyou:


For sharing the ans and the info. My dd also got $15 for qn 9 but when put $15 into the qn, the ans does not make sense as # of t-shirts is not whole number.

[Tinkerbelle]

vidhyalog:

Tinkerbelle:

[quote=\"vidhyalog\"]Hi - For Henry Park 2011 Science Prelim - Booklet A Q 21 - could someone confirm if the answer sheet answer of (1) (ie 4 populations) is correct?


Also for Qn 43B - Which of the Materials A,B, or C would be the most suitable for making safety vests for cyclists what would be the answer?

Thanks

Hi vidhyalog,
For Q21, the answer (1) is correct. There are 4 animal populations. Hibiscus & Ixora are plants.

For Q43B, the answer in the answer key is Material A. It reflected the most light.
However, DD's answer is Material C. It reflected light at the furthest distance from the light source. So....:scratchhead: Any other input?

Thanks Tinkerbelle. I also did not read the question properly for Q21 - cannot blame my son!

For 43B - my son also wrote C - as it reflected light at the farthest. Any other parents care to share?
Thanks[/quote]You are welcome, vidhyalog.

[Vanilla Cake]

ms_lim:

My dd also got $15 for qn 9 but when put $15 into the qn, the ans does not make sense as # of t-shirts is not whole number.

Yes, you are right. The # of t-shirts is not a whole number. Perhaps, you may wish to write to ACS (Junior/Primary) Maths HOD to seek clarification and share the outcome of your findings in KSP forum.
Thks.

For the info of KSP members in this forum, Q9 (3-mark):

Mr Lee bought some T-shirts for $425. If he was given a discount of 15%, he would be able to buy 5 more identical T-shirts for the same amount of money. What was the original price of each T-shirt?

[Verysuperkiasu]

Lenny08:

Hello there,


Can someone please share the answer sheet for roysth prelim 2011 papers?thanks alot.

Best Regards,
Lenny

which subject? Math? How do u attach on this forum?

[Lenny08]

Hi Verysuperkiasu,


Thanks.

Our very kind Vlim has attached the answer in ksp psle math thread.

Cheers,
Lenny

Verysuperkiasu:

Lenny08:

Hello there,

Can someone please share the answer sheet for roysth prelim 2011 papers?thanks alot.

Best Regards,
Lenny

which subject? Math? How do u attach on this forum?

[Vanilla Cake]

ngbrdad:

Henry Park Math paper.

Part I Q27 and Part II Q9 were missing some important informations.

Is this the question: Paper 1 Q27 that you wrote as \"Part I Q27\" ->
http://i54.tinypic.com/2klz7k.png\">
The smaller angle given is 74 degree while the bigger angle given should be 145 degree. Angle a is the one at the tip of the isosceles triangle.
145 degree - 74 degree = 71 degree
(180-71-71) degree
= 38 degree

As for Part II Q9, is this the question on the flow rate of tap A and tap B together with a graph?
If yes, suggested solution as below:

Tap A
6 min -> (30-24) litres = 6 litres
1 min -> 1 litre
3 min -> 3 litres

Tap A + Tap B
(9-6) min -> (24-9) litres
3 min -> 15 litres

Tap B
3 min -> 15 litres - 3 litres = 12 litres
1 min -> 4 litres

In one minute, 4 litres of water were drained out from Tap B.

If not, which question is \"Part II Q9\" in 2011 Henry Park Pri Sch P6 Prelim that you had mentioned?