<![CDATA[2010 PSLE Prelims]]>Can anyone tell me if there is any inherent mistake in Red Swastika 2010 Prelim Paper Q 13, Paper 2 ? It is about three empty tanks kept side by side with a crack in the third and smallest tank at the bottom ? Though with the given data, the answer can be arrived at 10.2ml/min, then the students have to presume that the tank has been leaking for the 64 minutes that the tap was turned on.


Anyone who has tried the question, please advice as to how you interpreted the question. Thanks,

]]>https://forum.kiasuparents.com/topic/13987/2010-psle-prelimsRSS for NodeThu, 30 Apr 2026 16:14:18 GMTFri, 17 Sep 2010 01:15:27 GMT60<![CDATA[Reply to 2010 PSLE Prelims on Mon, 04 Oct 2010 13:17:57 GMT]]>I think the answer to your question is 1200 people in Mass Dance after the change.


However, I’m not too sure how to post up my answers here. Very hard to type out.
I managed to work out on the basis that the total number of adults did not change. The total number of children did not change too.

]]>https://forum.kiasuparents.com/post/270004https://forum.kiasuparents.com/post/270004Mon, 04 Oct 2010 13:17:57 GMT<![CDATA[Reply to 2010 PSLE Prelims on Mon, 04 Oct 2010 13:07:52 GMT]]>The Red Swastika English paper seems rather simple…

]]>https://forum.kiasuparents.com/post/269999https://forum.kiasuparents.com/post/269999Mon, 04 Oct 2010 13:07:52 GMT<![CDATA[Reply to 2010 PSLE Prelims on Mon, 04 Oct 2010 12:50:23 GMT]]>Please help me with the post above previous post 🙏 😉 :celebrate: :?: :? :udaman: :udawoman: :clubmyself:

]]>https://forum.kiasuparents.com/post/269992https://forum.kiasuparents.com/post/269992Mon, 04 Oct 2010 12:50:23 GMT<![CDATA[Reply to 2010 PSLE Prelims on Mon, 04 Oct 2010 11:40:22 GMT]]>hi all,


My teacher gave us another question again.

At a fitness carnival,1600 people participated in a Mass Dance and Taiji. 30% of the Mass dance participants were adults. 40% of the Taiji participants were children. During a break, some Mass Dance participants went to join Taiji and some Taiji participants went to join the Mass Dance. After the change, 25% of the Mass Dance participants and 75% of the Taiji participants were adults. How many Mass Dance participants were there after the change?


I could not make 1 unit of Taiji & Mass Dance participants the same. Please help!

]]>https://forum.kiasuparents.com/post/269957https://forum.kiasuparents.com/post/269957Mon, 04 Oct 2010 11:40:22 GMT<![CDATA[Reply to 2010 PSLE Prelims on Sun, 03 Oct 2010 03:32:59 GMT]]>

jasmineong:
PSLEmom:

My child's class teacher has given them only random questions. My frenz has been suggesting that we need to make our kids do the entire paper mainly to assess the standard and then for time management. :idea: ????


Oh, I think need to do whole paper..my friend does that esp for time management..I dont have a p6 myself but this is what I hear..but strange that your child does not do in class because from what I know..most of my friends kids all do that now..they even have extra classes just to do exam papers in an exam kind of condition..which school is this do you mind me asking? (so I know which schools to erhmm recommend or not to recommend my friends..)

My teacher also picks questions randomly, she says that she is worried she may violate the copy right law.

]]>https://forum.kiasuparents.com/post/269365https://forum.kiasuparents.com/post/269365Sun, 03 Oct 2010 03:32:59 GMT<![CDATA[Reply to 2010 PSLE Prelims on Sat, 02 Oct 2010 12:58:24 GMT]]>what? I get error 400,

]]>https://forum.kiasuparents.com/post/269253https://forum.kiasuparents.com/post/269253Sat, 02 Oct 2010 12:58:24 GMT<![CDATA[Reply to 2010 PSLE Prelims on Sat, 02 Oct 2010 09:03:24 GMT]]>This question is from RGS 2010 prelim math Paper 1 Q15.


https://docs.google.com/gview?pid=explorer&srcid=0B1RM96g5JaKuMjVkMTFlNGItYmFkZC00ZmIwLWI5NWUtMTBiNTYwYTQwNmNj&docid=5ae8266f259c793042a39d9028ef8407%7Cf67ad602ecffb97a2e2cb5103ef90e8b&authkey=CN7WqYID&a=bi&pagenumber=10&w=800

Click on the link above^^. Its at the bottom, u may nid to enlarge it abit.

Quite challenging though, give it a try!

]]>https://forum.kiasuparents.com/post/269216https://forum.kiasuparents.com/post/269216Sat, 02 Oct 2010 09:03:24 GMT<![CDATA[Reply to 2010 PSLE Prelims on Thu, 30 Sep 2010 08:57:29 GMT]]>

PSLEmom:
My child's class teacher has given them only random questions. My frenz has been suggesting that we need to make our kids do the entire paper mainly to assess the standard and then for time management. :idea: ????

Oh, I think need to do whole paper..my friend does that esp for time management..I dont have a p6 myself but this is what I hear..but strange that your child does not do in class because from what I know..most of my friends kids all do that now..they even have extra classes just to do exam papers in an exam kind of condition..which school is this do you mind me asking? (so I know which schools to erhmm recommend or not to recommend my friends..)

]]>https://forum.kiasuparents.com/post/268515https://forum.kiasuparents.com/post/268515Thu, 30 Sep 2010 08:57:29 GMT<![CDATA[Reply to 2010 PSLE Prelims on Thu, 30 Sep 2010 08:53:09 GMT]]>My child's class teacher has given them only random questions. My frenz has been suggesting that we need to make our kids do the entire paper mainly to assess the standard and then for time management. :idea: ????

]]>https://forum.kiasuparents.com/post/268513https://forum.kiasuparents.com/post/268513Thu, 30 Sep 2010 08:53:09 GMT<![CDATA[Reply to 2010 PSLE Prelims on Thu, 30 Sep 2010 08:40:09 GMT]]>

PSLEmom:
Hi Frenz,

If your child who is appearing for PSLE 2010 has attempted the 2010 Top school Prelims papers, Just share with us how they fared (out of 10, E= Easy, A= Average, D= Difficult)?
_____________________________________________________________

School English Science Maths
_____________________________________________________________
1. Raffles
2. Tao Nan
3.Nanyang
4. CHIJ (St. N)
5. River Valley
6.Rosyth
7. Mahabodhi
8.Pei Chun
9.Red Swastika
10.Henry Park
Did your child's class teacher go through these good school papers with your child, I know some schools do that, this is not related to what you are asking..but wondering if your child's school is like that?

]]>https://forum.kiasuparents.com/post/268506https://forum.kiasuparents.com/post/268506Thu, 30 Sep 2010 08:40:09 GMT<![CDATA[Reply to 2010 PSLE Prelims on Thu, 30 Sep 2010 08:35:09 GMT]]>Hi Frenz,

If your child who is appearing for PSLE 2010 has attempted the 2010 Top school Prelims papers, Just share with us how they fared (out of 10, E= Easy, A= Average, D= Difficult)?


School English Science Maths
1. Raffles
2. Tao Nan
3.Nanyang
4. CHIJ (St. N)
5. River Valley
6.Rosyth
7. Mahabodhi
8.Pei Chun
9.Red Swastika
10.Henry Park

]]>https://forum.kiasuparents.com/post/268503https://forum.kiasuparents.com/post/268503Thu, 30 Sep 2010 08:35:09 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 13:32:06 GMT]]>

Vanilla Cake:
the kiasu student:

[quote=\"the kiasu student\"]My math teacher gave us this question from another school's prelim:


There are more pupils in A than B. 30% of the pupils in A is 45 more than 40% of the pupils in B. If 10% of the pupils in A leaves to join B, there will be 200 more pupils in A than in B.

a) How many pupils are there in B?
b) How many % less pupils are there in B than in A?
(Leave your answer as a fraction in its simplest form.)

I got 2075 for (a) and 76/2/7 (76 is the whole number on the left of the fraction 2 over 7) for (b). Are my answers right?


Please i need the solution urgently!!!!

Refer to http://www.onsponge.com/forum/35-thinkingmathonsponge/5071-percentage-p6-2010-sa2-rgs-p2-q18.html for solution.
Think it's better to post your Maths questions over http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=280&start=1960 - Q&A - PSLE - Maths.[/quote]

Thank you anyway. :celebrate:

]]>https://forum.kiasuparents.com/post/267445https://forum.kiasuparents.com/post/267445Tue, 28 Sep 2010 13:32:06 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 13:28:15 GMT]]>

Vanilla Cake:
the kiasu student:

[quote=\"the kiasu student\"]My math teacher gave us this question from another school's prelim:


There are more pupils in A than B. 30% of the pupils in A is 45 more than 40% of the pupils in B. If 10% of the pupils in A leaves to join B, there will be 200 more pupils in A than in B.

a) How many pupils are there in B?
b) How many % less pupils are there in B than in A?
(Leave your answer as a fraction in its simplest form.)

I got 2075 for (a) and 76/2/7 (76 is the whole number on the left of the fraction 2 over 7) for (b). Are my answers right?

Please i need the solution urgently!!!!

Refer to http://www.onsponge.com/forum/35-thinkingmathonsponge/5071-percentage-p6-2010-sa2-rgs-p2-q18.html for solution.
Think it's better to post your Maths questions over http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=280&start=1960 - Q&A - PSLE - Maths.[/quote]I'm afraid my posts would be buried under other new posts in Q&A PSLE Maths

]]>https://forum.kiasuparents.com/post/267443https://forum.kiasuparents.com/post/267443Tue, 28 Sep 2010 13:28:15 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 13:23:58 GMT]]>

the kiasu student:
the kiasu student:

My math teacher gave us this question from another school's prelim:


There are more pupils in A than B. 30% of the pupils in A is 45 more than 40% of the pupils in B. If 10% of the pupils in A leaves to join B, there will be 200 more pupils in A than in B.

a) How many pupils are there in B?
b) How many % less pupils are there in B than in A?
(Leave your answer as a fraction in its simplest form.)

I got 2075 for (a) and 76/2/7 (76 is the whole number on the left of the fraction 2 over 7) for (b). Are my answers right?

Please i need the solution urgently!!!!

Refer to http://www.onsponge.com/forum/35-thinkingmathonsponge/5071-percentage-p6-2010-sa2-rgs-p2-q18.html for solution.
Think it's better to post your Maths questions over http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=280&start=1960 - Q&A - PSLE - Maths.

]]>https://forum.kiasuparents.com/post/267441https://forum.kiasuparents.com/post/267441Tue, 28 Sep 2010 13:23:58 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 12:55:28 GMT]]>

the kiasu student:
My math teacher gave us this question from another school's prelim:


There are more pupils in A than B. 30% of the pupils in A is 45 more than 40% of the pupils in B. If 10% of the pupils in A leaves to join B, there will be 200 more pupils in A than in B.

a) How many pupils are there in B?
b) How many % less pupils are there in B than in A?
(Leave your answer as a fraction in its simplest form.)


I got 2075 for (a) and 76/2/7 (76 is the whole number on the left of the fraction 2 over 7) for (b). Are my answers right?
Please i need the solution urgently!!!!

]]>https://forum.kiasuparents.com/post/267434https://forum.kiasuparents.com/post/267434Tue, 28 Sep 2010 12:55:28 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 12:45:47 GMT]]>

Brenda10:
the kiasu student:

Hi all, my math teacher gave us this question from an unknown school's prelim. I really need help.


Ahmad & Haris together took 5 days to paint a house. If Ahmad & Haris work together for 2days, followed by Ahmad working alone for 8 days, Haris will take 1 more day to complete the remaining work. How long will Ahmad take to paint the house all by himself?

Hi, please refer the following link:

http://www.onsponge.com/images/fbfiles/images/forum_2010_06_07_rate_1.png

Thank you Brenda, now i understand......

]]>https://forum.kiasuparents.com/post/267430https://forum.kiasuparents.com/post/267430Tue, 28 Sep 2010 12:45:47 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 12:39:46 GMT]]>This post was deleted as it was a repeat of another post.

]]>https://forum.kiasuparents.com/post/267429https://forum.kiasuparents.com/post/267429Tue, 28 Sep 2010 12:39:46 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 12:38:58 GMT]]>My math teacher gave us this question from another school’s prelim:


There are more pupils in A than B. 30% of the pupils in A is 45 more than 40% of the pupils in B. If 10% of the pupils in A leaves to join B, there will be 200 more pupils in A than in B.

a) How many pupils are there in B?
b) How many % less pupils are there in B than in A?
(Leave your answer as a fraction in its simplest form.)


I got 2075 for (a) and 76/2/7 (76 is the whole number on the left of the fraction 2 over 7) for (b). Are my answers right?

]]>https://forum.kiasuparents.com/post/267427https://forum.kiasuparents.com/post/267427Tue, 28 Sep 2010 12:38:58 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 12:09:20 GMT]]>

the kiasu student:
Hi all, my math teacher gave us this question from an unknown school's prelim. I really need help.


Ahmad & Haris together took 5 days to paint a house. If Ahmad & Haris work together for 2days, followed by Ahmad working alone for 8 days, Haris will take 1 more day to complete the remaining work. How long will Ahmad take to paint the house all by himself?
Hi, please refer the following link:

http://www.onsponge.com/images/fbfiles/images/forum_2010_06_07_rate_1.png

]]>https://forum.kiasuparents.com/post/267420https://forum.kiasuparents.com/post/267420Tue, 28 Sep 2010 12:09:20 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 11:58:58 GMT]]>

the kiasu student:
Hi all, my math teacher gave us this question from an unknown school's prelim. I really need help.


Ahmad & Haris together took 5 days to paint a house. If Ahmad & Haris work together for 2days, followed by Ahmad working alone for 8 days, Haris will take 1 more day to complete the remaining work. How long will Ahmad take to paint the house all by himself?
Surfing on iPhone hard to type but I think the answer is 14days if I did not calculate wrongly.

Oh dear... I read the question as Ahmad working along for 8 HOURS! So silly!

]]>https://forum.kiasuparents.com/post/267416https://forum.kiasuparents.com/post/267416Tue, 28 Sep 2010 11:58:58 GMT<![CDATA[Reply to 2010 PSLE Prelims on Tue, 28 Sep 2010 11:11:25 GMT]]>Hi all, my math teacher gave us this question from an unknown school’s prelim. I really need help.


Ahmad & Haris together took 5 days to paint a house. If Ahmad & Haris work together for 2days, followed by Ahmad working alone for 8 days, Haris will take 1 more day to complete the remaining work. How long will Ahmad take to paint the house all by himself?

]]>https://forum.kiasuparents.com/post/267402https://forum.kiasuparents.com/post/267402Tue, 28 Sep 2010 11:11:25 GMT<![CDATA[Reply to 2010 PSLE Prelims on Wed, 22 Sep 2010 12:22:12 GMT]]>

the kiasu student:
Hi all,


My math teacher gave us a question from the nanyang prelims, still could not figure it out:

Mrs Reuten bought some pizzas for a group of children. The girls received thrice as many pizzas as the boys. There were an equal number of girls and boys. Each boy ate 2/9 of a pizza and the boys finished all the pizzas given to them. Each girl ate 1/6 of a pizza and the girls had 4½ pizzas left. How many pizzas did Mrs Reuten buy?

Pls help
My DS has another way of solving this problem. This is his method:

Ratio of Boy Pizza to Girl Pizza = 1:3

Assume Boy and Girl eat same proportion of pizza and finish all the pizzas they have been given, Girl will each eat 2/9 x 3 = 2/3 of pizza

But Girl eat only 1/6 each, so the difference: 2/3 - 1/6 = 1/2

Leftover is 4 and 1/2 pizza => (4 1/2) / (1/2) = 9 girls (or boys since they are same number)

So boys has 2/9 x 9 = 2 pizzas
and girls has (1/6 X 9) + 4 1/2 = 6 pizzas
and total is 8 pizzas

]]>https://forum.kiasuparents.com/post/264235https://forum.kiasuparents.com/post/264235Wed, 22 Sep 2010 12:22:12 GMT<![CDATA[Reply to 2010 PSLE Prelims on Wed, 22 Sep 2010 11:46:04 GMT]]>Algebra method:


Let the amount of pizzas that the boys had be x.
Therefore, the girls would have 3x pizzas since they have 3 times as many pizzas as the boys.

Number of boys will be x/(2/9) as each boy ate 2/9 of a pizza.

X/(2/9) = x/1 x 9/2 = 9x/2 = 4.5x. Therefore, there are 4.5x boys.

Number of girls is similar
(3x-4.5*)/(1/6) = (3x - 4.5) x 6 = 6 x (3x - 4.5) = 6 x 3x - 6 x 4.5 = 18x - 27

Since the nos. of boys & girls Are similar, 4.5x = 18x - 27. This is a simple equation, rearrangement of unknowns are simple.

18X - 4.5x = 27
Then it all becomes straightforward.
13.5x = 27

Using a calculator, we deduce that x = 2.
Total amt of pizza = x + 3x = 4x = 2 x 4 = 8.

Answer: 8. So it's confirmed. This is basic algebra only, i've encountered problem sums in my p6 books where up to 3 unknowns were needed. When there's more than 1 unknown, you have to either substitute all other unknowns for one single unknown or use multiple equations to eliminate unknowns till you have only 1 left. Just a piece of advice(:

*reason why I used -4.5 is because the girls had 4.5 pizzas left.

Hope this helps(:

From a fellow p6.

]]>https://forum.kiasuparents.com/post/264226https://forum.kiasuparents.com/post/264226Wed, 22 Sep 2010 11:46:04 GMT<![CDATA[Reply to 2010 PSLE Prelims on Wed, 22 Sep 2010 11:12:30 GMT]]>

the kiasu student:
Hi all,


My math teacher gave us a question from the nanyang prelims, still could not figure it out:

Mrs Reuten bought some pizzas for a group of children. The girls received thrice as many pizzas as the boys. There were an equal number of girls and boys. Each boy ate 2/9 of a pizza and the boys finished all the pizzas given to them. Each girl ate 1/6 of a pizza and the girls had 4½ pizzas left. How many pizzas did Mrs Reuten buy?

Pls help
Every boy eat 4/18 of a pizza whilst girl eat 3/18 of a pizza. Same # of boys and girls.

Model drawing:
Boys Pizza [][][][] 4 units
Girls Pizza [][][][][][][][][][][][] 3x4 units = 12 units

When boys ate up all their pizza (4 units), girls ate up only 3 units of their pizza. Left 9 units.

9 units = 4 & 1/2 pizza
1 unit = 1/2 pizza

Total Pizza bought: 16 units = 8 pizzas

]]>https://forum.kiasuparents.com/post/264214https://forum.kiasuparents.com/post/264214Wed, 22 Sep 2010 11:12:30 GMT