Power, Beauty, Soul

Friday, October 8, 2010

PSLE Maths Answers

Paper 1

Q1. 3

Q2. 1

Q3. 1

Q4. 3

Q5. 3

Q6. 4

Q7. 3

Q8. 1

Q9. 2

Q10. 2

Q11. 4

Q12. 4

Q13. 2

Q14. 1

Q15. 4

Q16. 9 cm

Q17. 113°

Q18. 3 and 11/25

Q19. 1 and 5/21

Q20. 0.625

Q21. 6.4

Q22. 1550 ml

Q23. $ 49.20

Q24. 1/4

Q25. 10:6:3

Q26. 30 %

Q27. 4.5 km/h

Q28. 75 cm

Q29. 60

Q30. 5/9

Paper 2

Q1

List all the common factors of 12 and 18.

Ans: 1, 2, 3, 6

Q2's answers

a) West

b) Directly above the "Swing"

Q3

Ans: $ 186.90

Q4

Ans: 48 cm²

Q5

Faizal and Gary were racing. Both of them did not change their speeds throughout the race. They started at the same time and the same place. When Gary reached the finishing line, Faizal had only run 5/8 of what Gary had run. Gary speed was 75m/min faster than Faizal. What was Faizal's speed in m/min?

Ans: 125 m/min

Q6

John had 1.2m of wire. He used some of it to form a figure as shown below. (Figure has 5 lines)

a) Find how much wire he used to form this figure.

b) If k=15, find the length of wire that he did not use.

Ans: (a) (6k+3) cm (b) 27 cm

Q7

The table below shows the number of books read by pupils in a class of 30. The average number of books read by the 30 pupils is 6. What is the missing number in the table?

-----------------------------------------------------------

Average number of Books
Number of Pupils

-----------------------------------------------------------

0
10

8
15

?
5

-----------------------------------------------------------

Ans: 12

Q8

When a jar is filled with 40 screws, the jar weighs 1.4kg. When the jar is filled with 20 iron nails, the jar weighs 500g.Each screw's mass is twice that of an iron nail. What is the mass of the jar when empty?

Ans: 200 g

Q9

Angle question

Ans: 78°

Q10

Two quadrants are cut out of a rectangular sheet of paper.

Ans: 5 cm

Q11

There are 320 marbles put into 4 different boxes. Box A has the most marbles whereas Box D has the least marbles.The difference in the number of marbles in Box A to the number of marbles in Box B, C and D is 8, 13 and 19. What is the number of marbles in Box D?

Ans: 71

Q12

A group of girls wants to take some sweets. If each girls takes 11 sweets, one of the girls will only have 6 sweets.If each girl takes 8 sweets, there will be 25 sweets left over. How many sweets are there?

Ans: 105 sweets

Q13

Geometry question

Ans: 118°

Q14

A person bought a pair of shoes and a bag. He spent $57.60 in total. The pair of shoes costs $9.60 more than the bag. He was given a total discount of $22.40 for the 2 items. A 25% discount was given for the bag.

(a)Find the cost of the pair of shoes.

(b) Find the percentage of discount given for the pair of shoes.

Ans: (a) $ 33.60 (b) 30%

Q15

(Based on graph)

(a) What fraction of the tank was filled after 4 minutes?

(b) How much water flows from Tap B in 1 minute?

Ans: (a) 1/7 (b) 3.75 litres/min

Q16

Nurul and Peili shared a sum of $60. Nurul spent twice as much as Peili. What Peili had left was $7 more than what she had spent. Peili had twice as much as Nurul in the end.

(a) How much did Peili spend?

(b) How much did Nurul have at first?

Ans: (a) $11 and (b) $31

Q17

Structure Number Number of Rods Height (cm)

------------------------------------------------------------

1 12 3

2 20 3

3 25 6

4 33 6

5 38 9

6

------------------------------------------------------------

a) Fill in the number of of rods and height for structure 6. [1 mark]

b) Find the height of Structure 119. [2 marks]

c) Find the number of rods for Structure 119. [2 marks]

Ans (a)46 and 9 (b)180 (c)779

Q18

Tank B is empty and Tank A is 1/3 filled. Water flows in from a tap at a constant rate of 1.2 litres per minute.How long will it take for both tanks to be of the same height?

Refer to figure.

Ans: 15 min

Thursday, August 19, 2010

Laughter is the best medicine

Haha...

Saturday, July 10, 2010

Quiz, for relaxation ONLY

Who do you think is the most honest footballer in the UK team?

Answer this question by "commenting" your answer on this post. Stand a chance to win a round trip to UK and a Jabulani Football. Terms & Conditions apply.

For inquiries, please contact me personally at school.

Ends:18 JUL 2010

☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶

Wednesday, June 2, 2010

Random Caption

Stray cats ruin my life. Don't make it ruin yours. Stop abandoning your pets....

Thursday, May 27, 2010

Porsche Cayman--zzzzzzzzz....

                  Verdict: Adding a roof to a Boxster won't stop people throwing rotten tomatoes at you. It only means that the rotten tomatoes won't hit you.

            What is this German stupidity? Removing the engine from the classic VW and adding a Straight-6.... Some say that it did not have limited slip differentials because if....there were... *Clears Throat*... it would be faster than the 911. By spoiling the 911 business, the company will fall and be bust in no time.

         However, the Cayman is a VERY exotic and special, at least, better than some Ferraris. Why? Porsche had DNA and the soul in them... Ferrari? No, the best one so far is the Enzo. The 599 GTO limited? No. Their idea of cars-Sports cars, is to make a BIG profit. Compare the 360 Modena and the 430, you will find out that Ferrari is getting more and more cheapskate every year. The price? No change. Customers? A lot. Still a lot. How stupid is that?

        Yup, that's what I meant. Porsche have retained their quality and DNA. It symbolizes Europe's mass murderer and the old Beetle...VWs.... Simply nostalgic. The car is unbelievably quick and responsive. It is sooooo much better than the Evora, let alone the Boxster. Starting off, it has a F-6 engine, producing around 320 bhp and it is a mid-engined sports car, meaning that it has a balanced weight distribution and the perfect layout for a "Super-Sports Car"

         It does nought-to-sixty in a mere 4.6 secs and a top speed of 170 mph. Its rivals are: BMW Z4 M, Lotus Evora and the Audi TTrs. Though slower than the Z4 M, it is more attractive and has a brilliant design.

          On the other hand, it is TOO impractical. Yes, even for a sports car. The seats are more like a pile of rocks. The suspension and chassis? No..... Take it for a spin down the town? Yes, a good car for it. Show off to your mates? Yes, a good car for it. Take a 700km grand tour through France, Germany and Norway? NO! It will kill your back. Trust me. Don't spend more money on medical fees than on the car tself.

Rating: 15/20

A review by ZRchen. Tune in next week for more.