Tutor MathsGuru: Ask me for your burning Maths questions!

[KSP]

tamarind:

Dear all who replied to my question,

My friend said it is from an assessment book. The answer is not 175.

I just wanted to confirm that there is something wrong with this question. The publisher need to correct this mistake.

Either the question or answer is wrong.

[KSP]

I feel that to help our kids do well in Maths, we have to let them learn how to solve these mind twisting questions. Some of the PSLE Maths questions even we as parents can’t solve them. I feel that schools are not doing enough in this area.


While we can share our workings and solutions here, but when come to explaining to our kids they may not understand or take a while to absorb. I’m not sure this is the right approach. But I still think there should be a proper method in teaching our kids to solve model questions.

Is there anyone here watch the Friday night 10.30pm Ch8 show about the P6 student saying how tough the PSLE Maths paper.

The thing that interest me was when they asked the HCI and NYGH students to solve the "Ken Jim chocolate sweet" question, one of the NYGH said she already know how to answer this type of question when she was P5 and she learnt it at an enrichment class. So I really wonder which enrichment class teaches this. Is it Learning Lab, Dr Peh or etc… can do the job?

[lizawa]

KSP:

I feel that to help our kids do well in Maths, we have to let them learn how to solve these mind twisting questions. Some of the PSLE Maths questions even we as parents can't solve them. I feel that schools are not doing enough in this area.


While we can share our workings and solutions here, but when come to explaining to our kids they may not understand or take a while to absorb. I'm not sure this is the right approach. But I still think there should be a proper method in teaching our kids to solve model questions.

Is there anyone here watch the Friday night 10.30pm Ch8 show about the P6 student saying how tough the PSLE Maths paper.

The thing that interest me was when they asked the HCI and NYGH students to solve the \"Ken Jim chocolate sweet\" question, one of the NYGH said she already know how to answer this type of question when she was P5 and she learnt it at an enrichment class. So I really wonder which enrichment class teaches this. Is it Learning Lab, Dr Peh or etc.... can do the job?

I believe the top class students are exposed to this type of question and they should be able to do them. My P5 girl attends Maths supplementary class in school and her teacher teaches them Algebra, which is not in the P5 syllabus. But this is only for selected classes.

[Dharma]

lizawa:

I believe the top class students are exposed to this type of question and they should be able to do them. My P5 girl attends Maths supplementary class in school and her teacher teaches them Algebra, which is not in the P5 syllabus. But this is only for selected classes.

Agree w/ you, lizawa. If they are not done in P5, likely to be covered in P6.

[tianzhu]

Hi Chiefkiasu


I observe that mathsguru has been active in her responses to queries. Would it be possible to make her thread a sticky one or place her thread as one of subset of PSLE Maths? Otherwise it will be a waste if her thread disappears from the radar screen.

It will certainly benefit parents/students in the long run if she continues to be active in answering questions. Of course, this arrangement will only stay if she is active.

Best wishes

[all.013398in.013398one]

Thanks for MathGuru's commitment in Math solutions!

Perhaps it is good to indicate which level is the questions posted.
Or are these all PSLE P6 questions only? :thankyou:

[Muffins]

tianzhu:

Hi Chiefkiasu


I observe that mathsguru has been active in her responses to queries. Would it be possible to make her thread a sticky one or place her thread as one of subset of PSLE Maths? Otherwise it will be a waste if her thread disappears from the radar screen.

It will certainly benefit parents/students in the long run if she continues to be active in answering questions. Of course, this arrangement will only stay if she is active.

Best wishes

You're right Tianzhu, Mathsguru's thread should be a sticky for more efficiency in going into her thread, to see the problems she has solved!

Mathsguru, you are a very commited kiasuparenter, and thank you for all the sums you have solved so far! :thankyou: :udawoman:

[Tang]

Muffins:

Seekinghelp:

Ty Muffins, Tutormum and Mathsguru for ans! Now i understand how to do it.


Next ques: The sum of two numbers is 15 but the difference is 7. Find the bigger number.

It seems like I'm the only one who keep asking ques :lol: Paisey.
I know the ans is 11 but i duno hw to guide him thru explanation.

Hi Seekinghelp, the problem can be solved in two ways. Both, easy to understand and explain. I'll give both of them.

The first way
15 - 7 = 8
8/2 = 4
15 - 4 = 11

The second way is longer but easier to explain...
Bigger number + smaller number = 15
Bigger number - smaller number = 7

So, bigger number + smaller number + bigger number - smaller number = 15 + 7 = 22

Which is the same as bigger number + bigger number = 22

So 1 of the bigger numbers is 22/2 = 11

Hope I helped!

To get the bigger number (big unit), do addition instead of subtraction.

15 + 7 = 22
22/2 = 11

[tutormum]

Tang:

Muffins:

[quote=\"Seekinghelp\"]Ty Muffins, Tutormum and Mathsguru for ans! Now i understand how to do it.


Next ques: The sum of two numbers is 15 but the difference is 7. Find the bigger number.

It seems like I'm the only one who keep asking ques :lol: Paisey.
I know the ans is 11 but i duno hw to guide him thru explanation.

Hi Seekinghelp, the problem can be solved in two ways. Both, easy to understand and explain. I'll give both of them.

The first way
15 - 7 = 8
8/2 = 4
15 - 4 = 11

The second way is longer but easier to explain...
Bigger number + smaller number = 15
Bigger number - smaller number = 7

So, bigger number + smaller number + bigger number - smaller number = 15 + 7 = 22

Which is the same as bigger number + bigger number = 22

So 1 of the bigger numbers is 22/2 = 11

Hope I helped!

To get the bigger number (big unit), do addition instead of subtraction.

15 + 7 = 22
22/2 = 11[/quote]I like using model in my solution as I think it's easy to see and the children will have confidence in model drawing when they go to upper primary.

B No [ ] [ 7 ] } Total 15
S No [ ]

So 15 - 7 = 8
2 units = 8
1 unit = 4
so small no is 4 and big no is 4 + 7 = 11

:celebrate:

Can we have some computer lessons on how to draw image and post? :please: DS3 has been calling me a computer idiot. :x

[Tang]

tutormum:

Tang:

[quote=\"Muffins\"]
Hi Seekinghelp, the problem can be solved in two ways. Both, easy to understand and explain. I'll give both of them.

The first way
15 - 7 = 8
8/2 = 4
15 - 4 = 11

The second way is longer but easier to explain...
Bigger number + smaller number = 15
Bigger number - smaller number = 7

So, bigger number + smaller number + bigger number - smaller number = 15 + 7 = 22

Which is the same as bigger number + bigger number = 22

So 1 of the bigger numbers is 22/2 = 11

Hope I helped!

To get the bigger number (big unit), do addition instead of subtraction.

15 + 7 = 22
22/2 = 11

I like using model in my solution as I think it's easy to see and the children will have confidence in model drawing when they go to upper primary.

B No [ ] [ 7 ] } Total 15
S No [ ] [ 7 ] (in broken-lined box)

So 15 - 7 = 8
2 units = 8
1 unit = 4
so small no is 4 and big no is 4 + 7 = 11

:celebrate:

Can we have some computer lessons on how to draw image and post? :please: DS3 has been calling me a computer idiot. :x[/quote]Using the same model (with red box added) ,
2 big units -> 15 + 7 = 22
1 big unit (bigger number) -> 22/2 = 11