Q&A - PSLE Math

[chewypin]

tianzhu:

Hi


I took another look at your question, interestingly; it’s a fraction question.

My solutions are based on speed concepts as the earlier question is from the topic on speed.

Your kid would be able to understand better if he had covered the speed topic in school.

Just curious, is your kid in P5 or P6?

Have another look at the highlighted number, I think there is an error.

Best wishes

Yeah, it's a fraction question! My kid is in P6.
Yup, the error corrected should be 3/4 instead of 1/3.

[tianzhu]

chewypin:

Yeah, it's a fraction question! My kid is in P6.
Yup, the error corrected should be 3/4 instead of 1/3.

Hi

I think this question is from Nanyang P6 SA2 2008.

It’s interesting to see that your son’s school classifies it under fraction instead of speed.

Yes, I think a student can still solve it before learning the topic of speed.

Best wishes

[tianzhu]

Leanne:

Thanks Tianzhu,


Like your reply...its cool...hahahah

good day.

cheers
Leanne

Hi

You're welcome.

Best wishes

[tianzhu]

anneshirleygilbert:

Hello Tianzhu,

Interesting question.

I did it the Guess and Check method and got the answer after 10 guesses!!! Doubt students sitting in PSLE would have the luxury of time to do 10 guesses.

My answer is 343 apples and 657 oranges; but I'm curious and eager to learn your method.

By the way, can I presume the calculator can be used for such a question?

Thank you for posting such challenging questions. It helps me know what my daughter can expect for her exams.

Hi

According to the student who posted this question, it’s Q18 from paper 2.The last question of paper 2; so, it is supposed to be a killer type of questions.

Hence, calculator can be used.

You've given the right answers.

Yes, GC can be used, but it’s time consuming.

Is your daughter in P6 in a local school?

Best wishes

[anneshirleygilbert]

tianzhu:

anneshirleygilbert:

Hello Tianzhu,

Interesting question.

I did it the Guess and Check method and got the answer after 10 guesses!!! Doubt students sitting in PSLE would have the luxury of time to do 10 guesses.

My answer is 343 apples and 657 oranges; but I'm curious and eager to learn your method.

By the way, can I presume the calculator can be used for such a question?

Thank you for posting such challenging questions. It helps me know what my daughter can expect for her exams.

Hi

According to the student who posted this question, it’s Q18 from paper 2.The last question of paper 2; so, it is supposed to be a killer type of questions.

Hence, calculator can be used.

You've given the right answers.

Yes, GC can be used, but it’s time consuming.

Is your daughter in P6 in a local school?

Best wishes

My daughter is in P5, in a local school. Already, I can see that the questions are increasing in the level of difficulty. So far, my daughter is very motivated and sees every challenging question as something new to learn.

[tianzhu]

anneshirleygilbert:

My daughter is in P5, in a local school. Already, I can see that the questions are increasing in the level of difficulty. So far, my daughter is very motivated and sees every challenging question as something new to learn.

Hi

The reason why I asked my earlier question is because your username suggests that you’re not a local. It’s good to know that your child is motivated to learn.

The good news is she still has plenty of time before PSLE 2012.

Please curb your curiosity for a little longer. I am withholding my solution because I hoped to see more alternatives, especially solutions from students of Pei Hwa.

Best wishes

[Mum1113]

tianzhu:

anneshirleygilbert:

My daughter is in P5, in a local school. Already, I can see that the questions are increasing in the level of difficulty. So far, my daughter is very motivated and sees every challenging question as something new to learn.

Hi

The reason why I asked my earlier question is because your username suggests that you’re not a local. It’s good to know that your child is motivated to learn.

The good news is she still has plenty of time before PSLE 2012.

Please curb your curiosity for a little longer. I am withholding my solution because I hoped to see more alternatives, especially solutions from students of Pei Hwa.

Best wishes

hi Tianzhu
You sound so 'secretive'....make me so curious to know your solution. Curiosity kills the cat !
Getting ds to try this out when back home tonight :xedfingers:

[tianzhu]

Mum1113:

hi Tianzhu
You sound so 'secretive'....make me so curious to know your solution. Curiosity kills the cat !

Hi

There is no secret, just solution within the syllabus.

Besides solutions coming from those regulars, I hope to encourage more active participation from other members. This can only benefit members in the long run.

Best wishes

[iFruit]

tianzhu:

anneshirleygilbert:

Hello Tianzhu,

Interesting question.

I did it the Guess and Check method and got the answer after 10 guesses!!! Doubt students sitting in PSLE would have the luxury of time to do 10 guesses.

My answer is 343 apples and 657 oranges; but I'm curious and eager to learn your method.

By the way, can I presume the calculator can be used for such a question?

Thank you for posting such challenging questions. It helps me know what my daughter can expect for her exams.

Hi

According to the student who posted this question, it’s Q18 from paper 2.The last question of paper 2; so, it is supposed to be a killer type of questions.

Hence, calculator can be used.

You've given the right answers.

Yes, GC can be used, but it’s time consuming.

Is your daughter in P6 in a local school?

Best wishes

IMHO, this is a straightforward question if the student knows his/her simultaneous equations well...

4/7 * A + 11/9 * O = 999 ----> 36 x A + 77 x O = 63 x 999 ------(1)
A + O = 1000------------------> 77x A + 77x O = 77 x 1000 ------(2)

From the two equations,

41 A = 77000 - 63 x 999 ----> A = 343

O = 1000 - 343 = 657

[Dharma]

iFruit:

tianzhu:

[quote=\"anneshirleygilbert\"]
Hello Tianzhu,

Interesting question.

I did it the Guess and Check method and got the answer after 10 guesses!!! Doubt students sitting in PSLE would have the luxury of time to do 10 guesses.

My answer is 343 apples and 657 oranges; but I'm curious and eager to learn your method.

By the way, can I presume the calculator can be used for such a question?

Thank you for posting such challenging questions. It helps me know what my daughter can expect for her exams.

Hi

According to the student who posted this question, it’s Q18 from paper 2.The last question of paper 2; so, it is supposed to be a killer type of questions.

Hence, calculator can be used.

You've given the right answers.

Yes, GC can be used, but it’s time consuming.

Is your daughter in P6 in a local school?

Best wishes

IMHO, this is a straightforward question if the student knows his/her simultaneous equations well...

4/7 * A + 11/9 * O = 999 ----> 36 x A + 77 x O = 63 x 999 ------(1)
A + O = 1000------------------> 77x A + 77x O = 77 x 1000 ------(2)

From the two equations,

41 A = 77000 - 63 x 999 ----> A = 343

O = 1000 - 343 = 657[/quote]
http://postimage.org/image/2j0yl3484/


http://postimage.org/image/2j108mgpw/