Tutor MathsGuru: Ask me for your burning Maths questions!

[Hifive]

Hi VC’s mum


yes, yes, your explanation helps! Thank you so much!

[Vanilla Cake]

Hifive:

Hi everyone


Need help with this question
Source : ACS (Primary) SA2 2009 - P5

In the figure, a rectangular piece of paper is folded at two of its corner X and Z as shown. Find angle XYZ.

http://postimage.org/image/35kpmw8xw/

Thanks in advance.

Hi Hifive,

This question is not easy to explain as DD2 add dotted lines and labeled the angles in the original diagram. As both my daughters are in school, I am not able to scan DD2's solution.

Here's DD2's solution:

(180⁰-60⁰)÷2=60⁰
180⁰-90⁰-60⁰=30⁰
Angle XYZ=180⁰-30⁰-30⁰-20⁰-20⁰ = 80⁰

Pls wait for others to post their solutions as it's not easy to understand without adding dotted lines and labeling the angles in the original diagram.
BTW, Observer had posted his http://psle2010a.blogspot.com/2010/09/angles-p5-2009-sa2-acs-p2-q11.html for your question in his blog.Check it up.

VC's mum

[Hifive]

Hi VC’s mum


Thank you for your explanation and solution! Have a nice day!

[Ngserene617]

Hi can you help me this ques;

1. Zoe and Sean has $20 altogether.
Zoe has $4 more than Sean.
How much money does each of them have?

Thanks

mathsguru:

Original Title: Let MathsGuru Answer Your Burning Maths Questions!

:welcome:

Dear Parents,

Are you frustrated/stuck when helping your child solve his/her Maths questions? Are you inclined to use Algebra most of the time? Do you have difficulty trying to use diagrams or other heuristic methods (that Primary School students learn) to solve?

:idea: Post your questions here and see how MathsGuru solve them to the best of her ability. Detailed solutions will be posted back in this thread.

So start asking and watch this space!!

Cheers :celebrate: ,
MathsGuru

P/S (Disclaimer, in case you're wondering...):
Although MathsGuru is a full-time Maths tutor, this thread is meant to be an absolutely free resource for parents (or even children) with no strings attached. Just someone who's passionate about Maths and wanna spread the fun in learning Maths with others.

[Yu Xuan]

Hi Dharma or Tianzhu


Just want to be ‘doubly’ sure of this …

To convert m3 (metre cube) to cm3 (centimetre cube), i have to multiple by 10 to the power of 3, i.e. 1000 right?

Thanks!

[Ngserene617]

mathsguru:

Original Title: Let MathsGuru Answer Your Burning Maths Questions!


:welcome:

Dear Parents,

Are you frustrated/stuck when helping your child solve his/her Maths questions? Are you inclined to use Algebra most of the time? Do you have difficulty trying to use diagrams or other heuristic methods (that Primary School students learn) to solve?

:idea: Post your questions here and see how MathsGuru solve them to the best of her ability. Detailed solutions will be posted back in this thread
So start asking and watch this space!


Hi,
Can you help me this ques;
1. Zoe and Sean has $20 altogether.
Zoe has $4 more than Sean.
How much money does each of them have?

Thanks












Cheers :celebrate: ,
MathsGuru

P/S (Disclaimer, in case you're wondering...):
Although MathsGuru is a full-time Maths tutor, this thread is meant to be an absolutely free resource for parents (or even children) with no strings attached. Just someone who's passionate about Maths and wanna spread the fun in learning Maths with others.

[tianzhu]

Yu Xuan:

Hi Dharma or Tianzhu


Just want to be 'doubly' sure of this ...

To convert m3 (metre cube) to cm3 (centimetre cube), i have to multiple by 10 to the power of 3, i.e. 1000 right?

Thanks!

Hi Yu Xuan

Good Morning

1 m3 = 1000000 cm3

http://www.tutorvista.com/math/1-cubic-meter-to-cubic-centimeter

Best wishes

[Dharma]

Yu Xuan:

Hi Dharma or Tianzhu


Just want to be 'doubly' sure of this ...

To convert m3 (metre cube) to cm3 (centimetre cube), i have to multiple by 10 to the power of 3, i.e. 1000 right?

Thanks!

1 m = 100cm
1m3 = 100cm x 100cm x 100cm = 1,000,000cm3

[Dharma]

Ngserene617:

Hi can you help me this ques;

1. Zoe and Sean has $20 altogether.
Zoe has $4 more than Sean.
How much money does each of them have?

Thanks

Total money Sean has = ($20 - $4)/2 = $8
Total money Zoe has = ($20 + $4)/2 = $12

[tianzhu]

Ngserene617:

1. Zoe and Sean has $20 altogether.
Zoe has $4 more than Sean.
How much money does each of them have?

To Ngserene617

Good Morning

You may use MD.

1)Draw one box to show one unit for Zoe.Add another smaller box to it to represent 4.

2)Draw another box,same as Zoe in (1) to show one unit for Sean

3)2 units + 4 ----- 20

4) 1 unit ----- 8, therefore, Zoe -----12 and Sean ------8

Best wishes