Saturday, May 30, 2009

5 questions a day (1) - Solution

1. A container of sand weighed 5 kg when it was 1/2 full, and weighed 4 kg when it was 1/3 full. What was the weight of the container when it was full?



Answer: 8 kg



2. YY had some money. She bought a necklace for $250 and spent 1/4 of the remaining money on a ring. She still had 1/3 of her money left. How much did YY spend on the ring?



Answer: $50



3. Joanne, Ann and Yati share $240. Joanne receives 1/3 as much money as Yati. After Ann gave $20 of her money to Joanne, Joanne has 1/2 as much money as Yati. How much money does Ann have at first?



Answer: $80


4. Adi and Furqan had $71 altogether. Furqan and Zam had $105 altogether. Adi had 3/5 of the money that Zam had. How much money did Furqan have?



Answer: $20



5. A cook had a total of 336 large and small eggs. She use 4/7 of the large eggs and bought another 24 small eggs. As a result, the number of small eggs she had was 2/3 the number of large eggs left. How many more large eggs than small eggs had she at first?



Answer: 224

5 Maths questions a day (1)

1. A container of sand weighed 5 kg when it was 1/2 full, and weighed 4 kg when it was 1/3 full. What was the weight of the container when it was full?

2. YY had some money. She bought a necklace for $250 and spent 1/4 of the remaining money on a ring. She still had 1/3 of her money left. How much did YY spend on the ring?

3. Joanne, Ann and Yati share $240. Joanne receives 1/3 as much money as Yati. After Ann gave $20 of her money to Joanne, Joanne has 1/2 as much money as Yai. How much money does Ann have at first?

4. Adi and Furqan had $71 altogether. Furqan and Zam had $105 altogether. Adi had 3/5 of the money that Zam had. How much money did Furqn have?

5. A cook had a total of 336 large and small eggs. She use 4/7 of the large eggs and bought another 24 small eggs. As a result, the number of small eggs she had was 2/3 the number of large eggs left. How many more large eggs than small eggs had she at first?

Friday, May 29, 2009

June Holiday Supplementary Classes (Updated)

Dear Pupils of 6-9

Please be reminded that temperature-taking will be conducted when you turn up for all school activities in the June holidays. Don't forget your thermometer and temperature log.

As the canteen will not be open, do pack some light snack.

You should report punctually in your school uniform at the parade ground at 0755 on the following days.

4 June 20 09 (Thursday)
0800 to 1100
Mock Mathematics Examination

5 June 2009 (Friday)
0800 to 1000
Results and Review of Mock Mathematics Examination

22 June 2009 (Monday)
0800 to 1100
Review of Science Topical WS (Environment)
Q12 to Q20

23 June 2009 (Tuesday)
0800 to 0930
Mathematics
0945 to 1100
Mock Science Examination Booklet A
Results and Review of Mock Science Examination

24 June 2009 (Wednesday)
0800 to 0930
Mathematics
0945 to 1100
English Paper 1 Mock Test
Mini EL Class Test (Vocab Cloze, Synthesis and Compre OE)

Your teacher
Mdm Toh

Monday, May 25, 2009

Maths Questions (2m)

1.
Mrs Sim used honey and water in the ratio of 2 : 7 to make a drink.
How many litres of drink did she make if she used 4 litres of honey? (2m)

2.
Harry is (m + 2) years old now. 2 years ago, his sister was twice his age.
How old is his sister now? (2m)

3.
At 9 am, Bala drove from Town X to Town Y at an average speed of 100km/h.
At the same time, Calvin drove from Town Y towards Town X at an average speed of 95km/h. They met at 11.30pm. Find the distance between Town X and Town Y. (2m)

4.
The ratio of Annie's amount of money to Betty’s amount of money is 4 : 9.
How much more money does Betty have if Annie has $240? (2m)

5.
2/5 of $80 is the same as ___________% of $320. (2m)

SA1 - SW

Suggested Answer

Dear Fellow Schoolmates

There will be a Youth Olympic Games Carnival for all the residents in Hougang (1m) on 15 June 2009 from 9 a.m. to 5 p.m. (1m) The admission is free. (1m)

You can take part in 2-a-side Parent-Child Football or 3-on-3 Basketball. (1m) Early participants will get a $10 book voucher. (1m)

For further enquiries, you can contact me at 6 398 2049 or email me at Harris@sun.com (1m)

Thank you.

Harris Heng from 6K
Chairman of Youth Committee
Hougang Residents' Committee

Tuesday, May 12, 2009

Q11
Ivan bought strawberry cakes and cheese cakes for a party. He spent $112 on the cakes. Each piece of strawberry cake cost $2.50 and each piece of cheese cake cost 40% more than each piece of strawberry cake. 30% of what he bought were cheese cakes. How many pieces of cheese cake did he buy?

Q12
Eileen and Pauline each have some marbles. If Eileen gives 36 marbles to Pauline, both of them will have the same number of marbles. If Pauline gives 12 marbles to Eileen, the number of marbles that Eileen has to the number of marbles Pauline has will be 5 : 1. How many marbles does Eileen have?

Q13
Janice is driving to town. If she drives at an average speed of 60 km/h, she will reach town at 12.30 p.m. If she drives at a higher average speed of 80 km/h, she will reach town at 11.45 a.m. At what average speed should she be driving so that she will reach town at 12 noon?

Q14
A sum of money is shared among the 3 siblings, Joey, Jocelyn and Raymond. Joey has 20% more than Jocelyn and Raymond’s share is 1 2/5 times of Jocelyn’s share. If Joey has $3 600, how much does Raymond have?

Q15
Kim, Lin, Ming and Nan shared a sum of money. Kim received 25% of the total sum of money. Lin received 40% of the total sum of money received by Ming and Nan. Nan received half as much as Ming. Lin and Ming received $480 altogether.
(a) Find the sum of money shared by the four persons.
(b) How many percent more of the sum of money did Ming receive than Kim? Give your answer correct to the nearest whole number.

Q16
In a survey, 20% of the people are working adults and the rest are unemployed. 65% of the unemployed are females and there are 1200 more unemployed females than unemployed males. How many unemployed females should opt out of the survey so that only 40% of the people surveyed are unemployed females?

Q17
Bryan bought 8 files and 5 pens. Darren bought 5 files and 8 pens. Darren paid $3.60 less than Bryan. If a pen cost $1.50, how much did a file cost?

Q18
The ratio of the number of boys to the number of girls in an Athletic CCA is 5: 3. In every training session, each boy has to run 4 rounds while each girl has to run 3 rounds. If a total of 324 rounds are run, how many children are there in the Athletic CCA?

Q19
The number of girls in a school was 40% of the number of boys.
On a Fund Raising Day, each girl decided to donate $3 while each boy decided to donate $2. A total of $1904 was collected.How many girls were in the school?

Q20
Mother gave Jaclyn and Peter $455 to buy some books.
Jaclyn was given $85 more than Peter.
At the bookshop, Jaclyn spent twice as much as Peter.
Peter was left with 3 times as much money as Jaclyn.
How much did Jaclyn spend?

Friday, May 8, 2009

What's wrong with para 4?

Q1.

Ryan is 26 years old and Nurul is 11 years old now.
How many years ago was Nurul's age of Ryan's age?

PLease ignore this question till further notice.


Q2.
In Exhibition Hall A, 30% of the 800 people were men. In Exhibition Hall B, 40% of the 400 people were women and children. After some of the people in both the halls had switched hall, 25% of the people in Exhibition Hall A and 75% of those in Exhibition Hall B were men.
How many people were there in Exhibition Hall B after the change?

Q3
Mr Lim left City A for City B at 9.00 a.m. At the same time, Mr Wang left City B for City A. Mr Lim’s average speed was 100 km/h while Mr Wang’s average speed was 120 km/h. Mr Lim passed Mr Wang at a place, 20 km from the midway of the two cities.
(a) Find the distance between the two cities.
(b) At what time did they pass each other along the way?

Q4
Four boxes, A, B, C and D, contained a total of 375 balls at first. Then the number of balls in A was increased by 25; the number in B was decreased by 10; the number in C was halved and the number in D was tripled. As a result, the number of balls in each box was the same. Find the number of balls in Box A at first.

Q5
Mrs Ling had a total of 1 000 pieces of $5 and $10 notes. After she spent 3/7 of her $5 notes and 1/3 of her $10 notes, she had thrice as many $10 notes as $5 notes left.
(a) How many $5 notes did Mrs Ling have?
(b) What is the total amount of the $5 notes did she spend?

Q6
In an exhibition, 1/6 of the visitors were children. 60% of the adults were women. There were 48 more women than children.
(a) How many women were in the exhibition?
(b) After some men left the exhibition, only 25% of the remaining visitors were men. How many men left the exhibition?

Q7
At 10.30a.m., a bus moved off from Town X to Town Y at an average speed of 70km/h. At the same time, a motorcycle travelled from Town Y to Town X. After some time, the bus and the motorcycle passed each other. At 1.30p.m., they were 10 km apart. The bus reached Town Y at 3.30p.m.
(a) Find the average speed of the motorcycle.
(b) At what time did the motorcycle reach Town X?

Q8
Aisha, Benny and Chufen shared the cost of a birthday gift. The gift cost $90. Aisha paid $12 more than Benny. Chufen paid 4 times the total amount paid by Aisha and Benny. How much must Aisha and Benny each pay to Chufen if the three of them were to share the cost of the gift equally?

Q9
43.
Alisa had to sell 200 pieces of $2 and $5 donation tickets. After she sold 1/2 of the $2 tickets, she was given 21 more pieces of $5 donation tickets. As a result, the total number of $5 donation tickets she had was 3/5 the remaining number of $2 tickets. What was the total value of the $5 donation tickets Alisa had at first?

Q10
Suzanne earns a fixed salary every month. Each month, she saves 3/8 of her salary and spends the rest. 1/3 of her spending is used to pay for her handphone bill and 1/6 of the remainder is spent on transport. The rest is then spent on food. If the amount spent on food is $480 more than the amount spent on transport, what is Suzanne’s monthly salary?

Wednesday, May 6, 2009

What you need to get your 'A'

ANG HUI XIN
67
ANG QI JIAN
74.5
AO MINGYI, BELINDA
58.5
AW HWEE HEAN
68
CAI MENGYU
77
CASSANDRA LIM MIN HUI
76.5
CHEW JIA HUI, CHLOE
70
CHIA YUN SHAN
81.5
DEBBIE KOH TENG
68.5
ELUMALAI VAISHNAPRIYA
75
FONG WEI DENG
78
GOH JIA YING, CHRISTABEL
68.5
HASZIRAH BTE GHANI
109
HO XI MIN
69
HOU XIN'YU
71
JACELYN SIM SOCK LING
64.5
JULIANO PRASETYO ARDI
62.5
KEE KAH LOK
74
LI ZHIXIAN, RODRICK
71.5
LIM QIAN WEI
76
LIM XUE TING SHIRLEY
76
LIM YUAN BIN
79
LOH XIAO QI
70
LOW SONG DA EMERSON
82.5
LYNN LIM YAN YIN
79
MUHAMMAD ASYRAF B ADAM
73.5
NADIAH BTE ISA
57.5
NAVETHIRA D/O RAVI CHANDRAN
63.5
NG YAN ZHEN
75.5
NUR NAAZILAH BTE HIDAYATULLAH
65.5
ONG WEI LONG
77.5
PEH JIN HAO
71.5
PEI YAN BO
66.5
SEE JIA YI
63.5
SIM WEI JIE, EDRICK
68.5
SNG JIA HUI
69
TAN GUAN MIN
69
TRICIA LIM YUN QI
71
WOON WEE HAN, EUGENE
71
WU JINGNI
74.5
YU JING JIE
63
ZACKIR HUSSAIN AJMAL ARSATH
69.5

Saturday, May 2, 2009

Witnessing the police in action

The parcel was too irresistible to take, but what if there was a bomb? I had a hard and difficult time making up my mind. I scanned around the dark and deserted lane and no one was looking at me. In the end, I decided to take the parcel. But wait, what was that shuffling sound? It sounded like someone was coming!


I quickly dived forward for the parcel that was near the bench and took it. I ran away from the sound. I turned around to see what made the noise but it was too dark. I kept running blindly and knocked into something warm and had a sense of guilt.

A voice boomed like thunder, “Put the parcel back!”

I obeyed his words because I thought I was going to be beheaded if I did not put back the parcel so I ran back to the bench, placing the parcel nicely on the ground. Then, when I thought that I was safe, a big, hairy hand grabbed me by the arm and I was dragged into a thorny bush. I instantly thought that it was the end of my world! But behind the bush were five policemen.

One of them coaxed me, “We are not here to kidnap you but we are ‘kidnapping’ two kidnappers. The parcel you just held was just a ruse to trick the kidnappers here so we can catch the no-good-rotten-dirty-kidnappers! We put in dried leaves into the parcel to give it some weight. Stay here and watch us catch the kidnappers!”

For a moment, I felt both relieved and excited to see the police arresting the kidnappers in action and how they arrested the thugs.

True enough, about a good ten minutes later, two suspicious-looking men came and took the parcel and walked away, laughing evilly about how they would kill the hostages when they get back to their base. But they did not know that the police had hijacked their van. The two men got into their van and tried to turn on the engine but to no avail. The senior police officer radioed to the police station to request for reinforcements.

Five minutes later, while the two helpless men were fixing the van, the police came. Twenty trained policemen spilled out onto the lane. Knowing that they had been tricked, the kidnappers tried to put up a fight but knowing that they were surrounded, the kidnappers eventually surrendered. They released the hostages that had been tortured badly for three days.

The kidnappers were arrested and escorted to the waiting police car.

Crime never ever pays!

Contributed by Lim Yuan Bin
Class of 6-9 2009

What a misunderstanding!

"Yes! Finally the tests are over!” I shouted, heaving a sigh of relief.

It was a Friday evening and the sky was covered in a myraid of colours. I was going home from school and was reaching the foot of my block.

“When I reach home, I am going to play my PSP ,watch television…” I said to myself ,quickening my footsteps .

Just as I was drooling over the things I could do, an object placed in my path, blocked my way , interrupting my thoughts and made me fall .

“Wah!” I shouted as the fall took place and I landed on my knees. Feeling my sore knees, I scanned the area, finding the culprit of my fall. It was a small parcel . The suspicious-looking parcel was wrapped up in a thick sheet of paper. It was securely tied with a thick piece of rope.

Curiosity mingled with fear, I crawled forward to find out what was in the parcel. My mind was racing, I did not know if I should go for it and open the parcel or just leave it alone. But after much deliberation, my curiosity overcame my fears and I decided to open the parcel. Before I could even lay a finger on the parcel, a man tightly gripped my arm and I was shocked out of my wits .I looked up and there stood a muscular bald man with tattoos printed all over him from head to toe.

“What do you think you are doing?! “his voice boomed in my ears. Adrenaline coursed through every vein in my body. I stood there, too frightened to talk. The man did not wait for my response and pushed me aside, and made off with the parcel. I got back on my feet and looked around and as if magic, a neighborhood police officer who was patrolling around appeared at the scene.

I told him about the situation and we immediately went to find the man . Not long after, we found him standing under a block .The policeman swiftly ran up to the man and caught him by the arm. I went forward when the policeman beckoned me to do so. I grabbed the parcel and tore it open. I saw a red and white capsule in a zip-lock bag. I took a closer look and saw the word “cancer” on the bag.

The policeman asked the tattooed man what was happening and he said that the drugs were from the doctor. His mother had contracted cancer and needed the drugs urgently. Upon hearing this, I felt a hot blush in my cheeks and I immediately apologized to both the policeman and the muscular man profusely for all the trouble caused.

The muscular man went off .The policeman went back to his patrolling while I scurried back home. From that day onwards, I decided not to poke my nose in other people’s business ever again.

Contributed by Juliano
Class of 6-9 2009

Weave a story - A pickpocket on the MRT

I was taking the MRT home. As usual, the peak hours packed us like sardines inside the train. Everyone was returning home from work. With nothing much to do, I began observing the other commuters in the train. Some of them were fiddling with their cell phones, some were talking to their friends and some had even dozed off. Right in front of me was a fellow woman commuter, dozing off, dressed to the nines and wearing lots of jewellery. She was also carrying a very elegant handbag.

At the next station, some commuters alighted and others boarded the train. Among them, a man whose forehead bore a red scar stood out. He was jostling his way through the crowd in an unruly manner. I frowned. He was acting suspiciously and his eyes were roving around.

Just then, he caught sight of the well-dressed woman. His eyes shone like stars when he saw her wallet sticking out from the half-zipped bag. The suspicious-looking man was totally unaware of me watching him and I could not help thinking that he was up to no good.

Next, the suspicious-looking man took another step towards the woman. He looked around to make sure no one was looking. Stealthily, he went closer to the woman and slipped his hand into her handbag. Very easily, he pilfered the wallet. Upon seeing this, I immediately shouted at the top of my lungs, "Pickpocket!”

Everyone, including the woman, was startled. The pickpocket tried to flee but two quick-thinking young men grabbed the pickpocket’s arm and pinned him to a nearby seat. Another lady pressed the emergency communication button and alerted the train operator about what had happened.

As the train neared the next station, the pickpocket knew he was done for and hung his head in shame.


Contributed by Belinda Ao
Class of 6-9 2009

An MRT Ride

"Next station, Tanjong Pager,”the speakers aired the announcement.

It was just like any other Tuesday. I was taking a train to Tanjong Pager for work when it happened. A young man clad in black approached a lady swiftly but quietly. The lady was in her forties and she was standing near the door.

Without warning, he bent a little and yanked the lady’swallet that was tucked under her arms. The lady keeled over and fell. Realising what had happened, the lady screamed at the man. I saw what had happened and quickly pressed the emergency communication button that was right beside where I was sitting. I alerted the train operator and told him what was happening right then.

The train operator told me that there would be a sergeant at the next station. My relief mingled with worry. A few of the brave male passengers had tried to subdue the young man by pinning him down but were immediately shaken off by the well-built thief.

“Tanjong Pager station," came the announcement that I had been waiting for. Thinking that he was able to escape, the young man immediately sprang to the nearest door , preparing to flee.

Within seconds, the doors opened. He rushed out, shoving the commuters out of his way but he hit head-straight to a very muscular man who had a tag on his uniform which read “Sgt. David Lim”.

The young man tried to flee but he was nabbed by the sergeant almost immediately. The sergeant and few of his colleague swere quick in control and everything was restored to normal quickly. The statement of the lady was also taken. The young man was being led away soon after and the woman who had been standing beside me collapsed to the floor and cried.

I comforted her, “Don’t worry.”

But the woman looked at me sadly and snapped, “I don’t care about my wallet I care about my son !”

I was too shocked to reply. The person who had snatched her wallet was actually her son! How could her son do such a despicable act, robbing his own mother ?! The crowd dispersed and the tense atmosphere returned to the normal bustling atmosphere. I too continued on my journey to work, hoping hat the young man would change into a better person and the lady would get over this incident.

This eventful journey taught me a lot and also delayed me by minutes. Luckily, I made it to work right on the dot, not a second early or late.

Contributed by See Jia Yi
Class of 6-9 2009