Average height of children Question - PSLE Maths 2009

Average height of children Question

The average height of some children was 139.4 cm.
The height of one child was recorded wrongly as 129 cm.
His correct height should be 192 cm. As a result, the correct
average height of the children was 142.4 cm.
How many children were there?


Solution :

Kettle Discount (Percentage) Question - PSLE Maths 2009

TEAM Question - PSLE Maths 2009

TEAM (Angle & Line) Question

Which letters from the word T E A M as shown below consists of perpendicular lines? [2]




Solution :



Ans : The letters T, E and M

Divide 3 squares into 4 equal parts - Challenging Maths - P6

Came across this question ..... by "kkhing"
at http://www.1800-teacher.com


Question :

The figure below consists of 3 squares.
Divide the figure into 4 equal parts.



Do post your answer here ..... Will post solution by Sunday 18 October 2009.

Aston Low & Wishboy managed to solve it already.

Looking for the answer .... it has been moved to :
http://challenging-maths.blogspot.com/2009/10/divide-3-squares-into-4-equal-parts.html

Ballon Question - PSLE Maths 2009

Question (Balloons)

String of 2 big balloons is 90cm.,
String of 5 small balloons is 1.2m.,

If both strings are of the same length, there would be 105 more small balloons than the big balloons.

How many balloons are there altogether?


Solution

Coming soon ....

Cookies Question - PSLE Maths 2009

Question (Cookies)

Sally baked some cookies to sell.

3/4 of them were chocolate cookies and the remaining were almond cookies.
After she sold 5/6 of chocolate cookies and 210 almond cookies, she had 1/5 of the cookies left.

How many cookies did she sell?


Solution :

Coming Soon ....

Give it a try ....

Curry Puffs Question - Maths PSLE 2009

Question (Curry Puffs) :

Curry puff shop sells puffs at $0.80 each.

Offer: Buy 3 get the 4th at half price.

If customer has $50, how many puffs can he buy if he buys as many as he can?

Fraction of shaded squares over total area ABCD - PSLE Maths

Fraction of shaded squares Question

ABCD, EFGH and IJKD are squares.
AE : EB = CF : FB = 2 : 1
I and K are mid-points of AB and CD respectively.
What fraction of the whole figure are the shaded parts?
(4 marks)


Solution :




It's important to view fraction of each of the shaded area over the same overall base.


(Solution .... Do you agree with the answer?)

PSLE Maths 2009 - Bicycle Race Question

Mei and Lin were in a bicycle race. Mei was traveling at a constant speed of 20km/hr and they both did not change their speed. When Lin completed half the race, Mei was 3.5km ahead. Mei completed the race at 10.45am.

What time did Lin complete the race?

Solution :

PSLE Maths 2009 - Find the Angle Question

Question : Find the Angle

PSLE Maths 2009 - Chocolate Questions

Math 2009 - Jim & Ken chocolates Question :




or

Check out Solution by : Rason Lee
http://psle-maths.co.cc
(Flash Movie)


(Note : Email me your questions & solution for me to do it up and post it here.)

PSLE Questions & Solutions

Dear Parents & Students,

My son just sat through his PSLE Exam 2009, that ended for him. Perhaps some others are still taking their higher Chinese these 2 days. All the best to them.

He had "intensive training" for his Maths & Science from his school, and they were going over different difficult types of questions to get them ready for the PSLE.

You must have heard about the uproar of the PSLE papers in The Straits Times, in Forum, on the internet, etc.

Other parents have heard that the Maths Head-of-Department (HOD) of my son's school have commented that the PSLE Maths paper "challenging". Indeed it is.

I've picked up some questions from different places and consolidating it here, so that we can all compare notes on the questions and possible solutions for them.

For those who have taken their PSLE Exam 2009, there's nothing we can do about it now, but let the other parents & students, have a much better idea, how tough the Maths & Science papers have become.

If you have any drawings (gif, png, jpeg, etc.) of the pictures, do email me
at : martin@moneytree-sg.com

Thanks.

(Singapore)