Tutor MathsGuru: Ask me for your burning Maths questions!

[Dharma]

http://i55.tinypic.com/24enbcw.gif\">

[Brenda10]

Chan09:

Correct but can this be done using the branch method as can't seem to get the answer using this? Appreciate if u can assist? Tks

Hi Chan09

The following was done by dd using branch method:

http://i54.tinypic.com/rszs49.jpg\">


Thank you.

[Brenda10]

ChiefKiasu:

Brenda10:

[quote=\"amirtha\"]Dear Maths Guru


Could you pls help to solve the below P6 question.


http://i56.tinypic.com/33m0nm1.jpg\">


thks

Hi, extracted answer from dd working:


4 x 4 = 16
16 /2 = 8
1/2 x 2 x 4 = 4
8 + 4 = 12
1/2 x 12 x 12 = 72
72 -12 = 60

Answer: 60cm2

Can your DD explain why she assumes that the height of triangle AFE to be 4cm?[/quote]Hi Chief

DD said she visualize the small area as a square.

Now she is worry and want to :siam:

[PiggyLalala]

Dharma:

http://i55.tinypic.com/24enbcw.gif\">

Thanks for the solution.
But how do we explain to the kids that
GE = 1u
GF = HF = 2u since the ratio of AE:AB = 1:2
(By similar triangles????)

Also, do we need to bring in HF???
TIA

[PiggyLalala]

Brenda10:

amirtha:

Dear Maths Guru


Could you pls help to solve the below P6 question.


http://i56.tinypic.com/33m0nm1.jpg\">


thks

Hi, extracted answer from dd working:


4 x 4 = 16
16 /2 = 8
1/2 x 2 x 4 = 4
8 + 4 = 12
1/2 x 12 x 12 = 72
72 -12 = 60

Answer: 60cm2

Hi Brend10,
just curious, did the teacher go through this question in class? If yes, what is the method? I think it is not very clear that the height of triangle AFE is 4cm. TIA

[Brenda10]

PiggyLalala:

Brenda10:

[quote=\"amirtha\"]Dear Maths Guru


Could you pls help to solve the below P6 question.


http://i56.tinypic.com/33m0nm1.jpg\">


thks

Hi, extracted answer from dd working:


4 x 4 = 16
16 /2 = 8
1/2 x 2 x 4 = 4
8 + 4 = 12
1/2 x 12 x 12 = 72
72 -12 = 60

Answer: 60cm2

Hi Brend10,
just curious, did the teacher go through this question in class? If yes, what is the method? I think it is not very clear that the height of triangle AFE is 4cm. TIA[/quote]Hi PiggyLalala

No. This is what she had done at home during the holiday.

She visualize the drawing and come with this this area is a small square with size of 4cm.

We did not check as her answer was match with the answer key that provided.

[amirtha]

[quote]Hi PiggyLalala


No. This is what she had done at home during the holiday.

She visualize the drawing and come with this this area is a small square with size of 4cm.

We did not check as her answer was match with the answer key that provided.[/quote]
Hi Brenda10

Thanks for your working. The answer \"60\" is correct as per the answer key.

[MathIzzzFun]

MathIzzzFun:

amirtha:

Dear Maths Guru


Could you pls help to solve the below P6 question.


http://i56.tinypic.com/33m0nm1.jpg\">


thks

Hi

A jigsaw puzzle approach :lol:

http://i55.tinypic.com/4t6fs3.jpg\">

cheers.

Hi

The worked solution

http://i54.tinypic.com/29dern8.jpg\">

cheers.

[PiggyLalala]

MathIzzzFun:

MathIzzzFun:

Hi

The worked solution

http://i54.tinypic.com/29dern8.jpg\">

cheers.

Nice Solution but again how do we explain that the height of triangle Y and Z to be the same.

[MathIzzzFun]

PiggyLalala:

MathIzzzFun:

[quote=\"MathIzzzFun\"]

Hi

The worked solution

http://i54.tinypic.com/29dern8.jpg\">

cheers.

Nice Solution but again how do we explain that the height of triangle Y and Z to be the same.[/quote]Hi

copy triangle ADG and paste it over triangle ABE, and you will see that Y and Z overlaps and are the same - ADG and ABE are reflections in the axis AC.

cheers.