How Percentages affect our daily lives

Hi Kids,

You must be wondering why we are learning Percentages.

Here is a good example.

For GST-registered hotel and F&B operators, GST is charged on the sum of:
# Price of the goods and services; and
# 10% service charge

Food	$100.00
10% Service Charge	$ 10.00
Sub-Total	$110.00
7% GST ( on $110.00)	$ 7.70
Total Price With GST	$117.70

(Extracted from http://www.iras.gov.sg/irasHome/page.aspx?id=2166)
Have fun learning!

Regards,
Mdm Lim JL

Angles

Hi Kids,

Please visit the following websites to learn more about Angles. Have Fun!

http://www.amblesideprimary.com/ambleweb/mentalmaths/protractor.html

>http://www.brainpop.com//math/geometryandmeasurement/angles/quiz/

>http://www.kidport.com/Grade6/math/MeasureGeo/MeasuringAngles.htm

>http://nlvm.usu.edu/en/NAV/topic_t_3.html


Regards,
Mdm Lim JL

Amendments to parallel WS for SA1 - part 2

Dear pupils,
yet another error! My sincere apologies for all the initial chaos and confusion. ^^

Set B
qn.4b) If there are 345 roses in the shop, NOT 342.

Anymore changes to the questions will be reflected in THIS POST from now on, so if you keep getting stuck, it may be a good idea to check back on this thread to see if there is any mistake with the question. (Erhem.. hopefully not!)

Once again, hope everyone stay flu-free!
Regards,
Mr Ng

Amendments to parallel WS for SA1.

Dear pupils,

here are the amendments for parallel questions for SA1.

Set A
Qn.8 - In the diagram, the length of BC is "/5cm". Please ignore the "/".

Set B
Qn.8 - Mr Yang arranged all the potted plants in 6 rows of 50, NOT 7 rows as is printed in the WS.

Please pass the message to your friends and classmates.

Happy holidays and stay flu-free =D

Regards
Mr Ng

Area of a Triangle

Hi Kids,

Here are some web resources mentioned during your Maths lessons.

Do visit the links for the various activities. Have Fun!

Tangrams


Watch the clip below to learn more about the area of a triangle.




BrainPOP - Area of Polygons (Log-in is required. Ask your teacher for the account.)

Another clip showing you how the area of a triangle can be computed.
Area of a Triangle

Regards,
Mdm Lim JL

Division of fraction by whole number

Dear all,
the link for division has been temporarily removed due to a possibility of a security compromise with the linked site. Please be patient while we investigate the issue.
Thank you

Parallel questions for P5

Dear all,
Here are the parallel questions. Please follow your teacher's instructions as to how to submit your answers. Please take note of the following before you start.

a) You are NOT allowed to use a calculator for questions 1 and 2.
b) Due to a problem with the display of fractions on this site, all fractions will be written in this format : numerator/denominator.
eg. 1/2 = one over two = half
5/12 = five over twelve




1) Judy earns $2500 per month. She saves 4 times as much as she spends each month. If she spends $400 and donates the rest of the money to charity, how much does she donate to charity each month?

2) Sam has $720 at first. He spent 5/12 of his money on some computer games and 4/7 of the remaining money on some comic books. How much did Sam spend on the comic books?


3) Johnny bought a flat for $316 000. He paid a deposit and a monthly installment of $1 250 for 20 years. How much did Johnny pay for his deposit?

4) There are 25 lamp posts from one end of the road to the other end at equal distances apart. The width of each lamp post was 0.4 m. The distance between 2 lamp posts is 15 m. Find the length of the road.

5) The total mass of some empty cans and bottles is 1.728 kg. Each can has a mass of 25 g. Each bottle is 17 g heavier than a can. If there are 22 more bottles than cans, how many bottles are there?

6) Each time Maggie puts $4.20 into her savings box, her mother puts in 3 times as much as Maggie. When Maggie has $1 663.20 in her savings box, how much has her mother put into her savings box?

7) There are red, blue and white roses in a florist shop. There are 24 more blue roses than white. The number of red roses is 5 times as many as the blue ones. If there are 654 red and white roses, what is the total number of roses in the shop?

8) At a food stall, the following items were sold at the prices listed as follows:
butter cookies - $0.55 per 100 g
cake - $2.95 per 500 g
sotong balls - 3 for $1.20
Sarah bought a 4-kg cake and 2.4kg of butter cookies.
a) She gave the cashier a $50 note. How much was her change?
b) If Sarah were to spend all her change on the sotong balls, how many sotong balls would she have bought?

9) 1/5 of the marbles in a shop are blue, 1/3 of the marbles are red and the rest are yellow.
a) What fraction of the marbles are yellow? Leave your answer in the simplest form.
b) If there are 36 less red marbles than yellow marbles, how many marbles are there in the shop?
c) The shopkeeper sold 1/2 of his marbles at $0.30 each. How much money did he get?