Q&A - PSLE Math

[Brenda10]

Vanilla Cake:

Dear Brenda10,


Sorry to bother you again. Could you pls request DD to check on CHIJ St. Nicholas Girls Pri 2010 P6 CA1 Paper 2 Q3 [2 marks]?
Answer given was 1¼ m² but my younger sister thought that it should be 5/12 m².

and

also under the same paper - Paper 1 Q23 [1 mark].
Answer given was incorrect -> 0.050 ml.
It should be 1/20 litre or 0.05 litre.

Off topic - P6 English 2010 CA1 - Kong Hwa School.
Q11 - Answer given -> option 3. Why?
Is the correct answer - Option 4? Pls advise.

Thks for your time and reply.

Dear VC

You're welcome. DD's answers are as follow:

CHIJ St. Nicholas Maths 2010 CA1 P2 Q3

Working
8m - (1/2m x 6) = 5m
5m /2 = 2.5 m (lenght of each rectangle)
2.5 x 0.5 = 1.25m²

Answer: 1.25m² mean same with the answer key 1¼ m²

CHIJ St. Nicholas 2010 Maths CA1 P1 Q23
Answser: 1/20 litre (Different with the answer key of 0.050 ml)



Kong Hwa 2010 EL CA1 Q11
Her answer was also Option 3 (are prepared) that same with the answer key provided.
According to her, All is the reference and one is for information only

Hope the above useful.

Thank you

[Brenda10]

Deleted.

[Vanilla Cake]

Brenda10:

Dear VC

You're welcome. DD's answers are as follow:

CHIJ St. Nicholas Maths 2010 CA1 P2 Q3

Working
8m - (1/2m x 6) = 5m
5m /2 = 2.5 m (lenght of each rectangle)
2.5 x 0.5 = 1.25m²

Answer: 1.25m² mean same with the answer key 1¼ m²

Dear Brenda10,
Pls revisit the working of this question again and thks.

8m - (1/2m x 6) = 5m -> OK
5m /2 = 2.5 m (length of each rectangle) should be 5m/6 since there are 6 lengths for 3 rectangles.
5/6x0.5 = 5/12 m²

Answer: 5/12 m² which is not the same with the answer key 1¼ m²

[Vanilla Cake]

Brenda10:

Kong Hwa 2010 EL CA1 Q11

Her answer was also Option 3 (are prepared) that same with the answer key provided.
According to her, All is the reference and one is for information only

Q11
All but one _____ to take part in next week's Mathematics Quiz.
(1) was prepared
(2) had prepared
(3) are prepared
(4) is prepared

Understand that the reference is all which means that everyone except one person will be taking part in next week's Maths Quiz.Should it be \"All but one is prepared...........\" instead of \"All but one are prepared................\"?
Pls help to explain the grammatical rule in this case.

plus

Pei Hwa Presbyterian Pri - 2010 P6 English CA1 paper:
Are the Q26 to Q30 missing from the paper but the text about \"Dr Jane Goodall and her chimpanzees\" is available?


Thks and much appreciated for your response.

[Brenda10]

Vanilla Cake:

Brenda10:

Dear VC

You're welcome. DD's answers are as follow:

CHIJ St. Nicholas Maths 2010 CA1 P2 Q3

Working
8m - (1/2m x 6) = 5m
5m /2 = 2.5 m (lenght of each rectangle)
2.5 x 0.5 = 1.25m²

Answer: 1.25m² mean same with the answer key 1¼ m²

Dear Brenda10,
Pls revisit the working of this question again and thks.

8m - (1/2m x 6) = 5m -> OK
5m /2 = 2.5 m (length of each rectangle) should be 5m/6 since there are 6 lengths for 3 rectangles.
5/6x0.5 = 5/12 m²

Answer: 5/12 m² which is not the same with the answer key 1¼ m²

Dear VC

After discuss with dd, we have the following concern.

DD takes it as a figure. She shaded the other 2 triangles and derive as this answer (1.25m²).

However, if she stacks them the other way she will get another different answer (7/12 m²) .

So if we divide by 6 then we will get the same answer with your sister (5/12 m²) .


Thank you.

[Vanilla Cake]

Brenda10:

Dear VC

After discuss with dd, we agree that your sister answer is correct.

DD should not just put 3 rectangles next to each other. She now realizes if she stacks them the other way she will get another different answer (7/12 m²) . As such if we divide by 6 then we will get the same answer with your sister (5/12 m²) .

Thank you.

Dear Brenda10,

Thks for your confirmation and with this question answered correctly, it's perfect score for my younger sister in this 2010 P6 CA1 paper.
But, I warned her that with additional topics like circles and speed being tested in P6 SA1/Prelim, it will not be easy for her.

Thks for your quick response.Much appreciated.

[Brenda10]

Vanilla Cake:

Brenda10:

Dear VC

After discuss with dd, we agree that your sister answer is correct.

DD should not just put 3 rectangles next to each other. She now realizes if she stacks them the other way she will get another different answer (7/12 m²) . As such if we divide by 6 then we will get the same answer with your sister (5/12 m²) .

Thank you.

Dear Brenda10,

Thks for your confirmation and with this question answered correctly, it's perfect score for my younger sister in this 2010 P6 CA1 paper.
But, I warned her that with additional topics like circles and speed being tested in P6 SA1/Prelim, it will not be easy for her.

Thks for your quick response.Much appreciated.

Dear VC

One concern is that dd said if we takes this as a figure and shade the other 2 triangles next to it, then the answer will be same with the answer key.

What is your view?

[Vanilla Cake]

Brenda10:

Dear VC


One concern is that dd said if we takes this as a figure and shade the other 2 triangles next to it, then the answer will be same with the answer key.

What is your view?

Dear Brenda10,

Why is there a need to rearrange the shaded parts? If you move them so that they are now side by side then
8-(1/2x6)=5
5÷2=2.5
2.5x1/2=1.25 which is the answer given.

Is that the way that dd does? I don't think that these 3 rectangles should be rearranged, what do you think?

[Brenda10]

Vanilla Cake:

Brenda10:

Kong Hwa 2010 EL CA1 Q11

Her answer was also Option 3 (are prepared) that same with the answer key provided.
According to her, All is the reference and one is for information only

Q11
All but one _____ to take part in next week's Mathematics Quiz.
(1) was prepared
(2) had prepared
(3) are prepared
(4) is prepared

Understand that the reference is all which means that everyone except one person will be taking part in next week's Maths Quiz.Should it be \"All but one is prepared...........\" instead of \"All but one are prepared................\"?
Pls help to explain the grammatical rule in this case.

plus

Pei Hwa Presbyterian Pri - 2010 P6 English CA1 paper:
Are the Q26 to Q30 missing from the paper but the text about \"Dr Jane Goodall and her chimpanzees\" is available?


Thks and much appreciated for your response.

Dear VC

I'm sorry that we're not sure how to explain the grammatical rules. Hopefully somebody else can help.

Yes. We have the Q26 to Q30. I can PM to you if you need it.

Thank you.

[Vanilla Cake]

Brenda10:

Dear VC


I'm sorry that we're not sure how to explain the grammatical rules. Hopefully somebody else can help.

Yes. We have the Q26 to Q30. I can PM to you if you need it.

Thank you.

Dear Brenda10,

It's OK and I will repost the question from Kong Hwa in the PSLE English thread.
Yes, pls PM the Q26 to Q30.
I have the answers:
Q26-2
Q27-1
Q28-3
Q29-4
Q30-3

but no questions.

Thks.