Maths Practise Paper

Date given: 25/10/2010

1. 3
2. 4
3. 1
4. 4
5. 4
6. 2
7. 3
8. 3
9. 1
10. 3
11. 2
12. 3
13. 3
14. 2
15. 4
16. 3
17. 3
18. 3
19. 2
20. 1
21. 53, 200
22. 96
23. 113
24. 26
25. 5/8
26. 44
27. 12.48
28. 0.07
29. 0.138, 0.29, 2.051, 2.54
30. $16.00
31. 2 and 7/20
32. -
33. 76m
34. 5
35. -
36. 5/8
37. 8
38. 7.35pm

At 9pm, her watch should show 8.20pm.
So she should leave at 8.20 - 45 mins = 7.35pm

39) Draw Model
5 units -> 240 - 15
1 unit -> 225/5 =45
Mark-> 2units + 15
= 105

40)
Angle a + b = 90 - 42 = 48
48/3 = 16
angle b = 16 x 2
=32

41) Draw Model
Total bought = (3 x3) + 4 = 13 units
1 unit = 130/13
= 10
Shirt = 3 unit
= 10 x 3 = 30

42a) 4 tables 10 chairs
b)12 chairs
c) 22 chairs

43) Draw Model
3 unit -> 45
1 unit -> 45/3 = 15
2 units -> 15 x 2 = $30

44) there are 10 identical sides (2 breadths = 1 length)
1 side = 30/3
= 3
Area = 2 sides x 3 sides
= 6 x 9
= 54 cm^2

Mathematics Practice Paper

Distributed on 18/10/2010

Section A

1. 1
2. 3
3. 4
4. 2
5. 4
6. 2
7. 2
8. 3
9. 3
10. 4
11. 2
12. 1
13. 3
14. 4
15. 1

Section B

16) Seventy - four thousand and fifty-two (0m for missing hyphens and wrong spelling)

17) 10050 - 10000 = 50

18) 55 989

19) 5 and 1/3

20) 3/5

21) 90 - 50 = 40 degrees

22) 64019, 60149, 41906, 41069

23) 7, 42 (1m each, if more than 2 answers, minus 1m for every wrong answer)

24) 4 x 12 = 48

25) 2000/ 4 = 500

26) 5/12 + 11/12 = 1 and 1/3

27) 1/4 = 2/8; shade any 2 circles

28) (0m for not labeling angle, -1m for not labeling Z)

29) 3

30) 4 - 2 = 2, 8 + 2 = 10

31) Line must be drawn through the point R, angle at pt R should be between 89 - 91 degrees.

32) Line must be drawn through W

33) 3

34) 8 x 8 = 64

20 x 8 = 160

6 x 6 = 36

64 + 160 +36 = 260 cm^2

35) CD and IJ or EF and IJ

Section C

36) Factors of 36 = 1, 2, 3, 4, 6, 9

Factors of 54 = 1, 2, 3, 6, 9

Common Factors = 1, 2, 3, 6, 9

Thus, answer is 6298

37a) 45 + 90 + 90 + 45 = 270

b) home

38) [ Draw Model]

300 + 300 + 630 = 1230

1230/3 = 410

410 + 1230 = 1640 ml

39) 1 unit -> 12

4 units -> 48

48 - 28 = 20

20/48 = 5/12

40) [draw model]

1 - 1/7 = 6/7

4 units -> 24

1 unit-> 6

7 units -> 6 x 7 = 42

41) 42 - 16 = 26

26 x 3 = 78

78 + 42 + 16 = 136

b) 42 + 16 = 58

136 - 58 = 78

42) 6 x 4 = 24

24 x 6 = 144

144 = 12 x 12 cm

43) 405 / 5 = 81

81 = 9 x 9

9 x 5 = 45 ( Length of rect Y)

9 x 3 = 27 ( Breadth of rect Y)

Area = 45 x 27

= 1215 cm^2

Science Practice Paper

Distributed on 18/10/2010
Updated on 26/10/2010 with keywords highlighted in blue.


Section A

1. 4
2. 4
3. 2
4. 4
5. 3
6. 3
7. 2
8. 3
9. 1
10. 3
11. 3
12. 1
13. 2
14. 4
15. 4
16. 2
17. 1
18. 4
19. 1
20. 3 / 2
21. 3
22. 1
23. 2
24. 1
25. 3
26. 1
27. 4
28. 3
29. 1
30. 2

Section B

31a) Air can be compressed.
31b) I can poke some holes on the Styrofoam cup.


32a) False; b) False; c) True; d) Not


33a) Line should be drawn on the stroke above 100ml and labelled 120 ml.
33b) It will be the same.
33c) The plasticine has a definite volume, so the water level will be the same.


34ai) Skeletal System; ii) Muscular System
34bi) X; ii) The walls of the small intestine absorb the digested food through the blood vessels and is transported to all parts of the body.


35a) It has taken in water.
35b) It is the seed leaves/ seed coat.
35c) Yes. When plant began to grow its leaves, it can make its own food, so the plant will not die if Simon removed part X.


36a) Move the torch further away from the apple.
36b) Move the apple nearer to the wall.


37) Opaque: Aluminium foil, white board; Translucent: tracing paper, tissue paper; Transparent: clear glass, mineral water.


38a) Ali
38b) Light travels in a straight line.


39a) Triangle; Circle
39b) Metal, wood.


40a) Rises; Drop / Increases; Decreases
40b) Heat travelled from the hot water to the cold mug.


41a) It will become a magnet.
41b) Bring the nail to some paper clips and see if the clips are attracted to the nail.


42) Bad conductors: Plastic spoon, Ice cream stick; Good: Aluminium foil, sewing needle.


43a) 30
43b) The temperature of the coffee decreased from 75 to 45. / Drop to the same temperature as at 6 mins.
43c) It took 6 minutes.


44a) It is a thermometer.
44b) It is 39 degrees.
44c) It will not be accurate.


45a) Group D; b) Group E
45c) They reproduce by giving birth to their young.

English Language SA2 Mock Paper 2

Given on 18.10.2010 for PSLE Marking Days

Section A - G

Phrases to be highlighted are in blue

1. 3
2. 2
3. 3
4. 2
5. 1
6. 3 (Yesterday, Mr Wong)
7. 4 (now, she)
8. 2 (not to buy, people)
9. 4 (last friday, boys)
10. 3 (Peter and I)
11. 1 (girls, over there)
12. 4
13. 1
14. 3
15. 3
16. 4
17. 2
18. 4
19. C Mountains
20. A Different
21. F Tallest
22. D Only
23. B I
24. C My
25. D She
26. F Us
27. C Rang
28. E is ringing
29. A Ring
30. F Was ringing
31. Is the baby asleep or awake?
32. Both the thief and his accomplice were arrested yesterday.
33. You must open a letter before you can read it.

Section H

34. They were going home.

35. She heard a yelp from a bush near the pavement.

36. They applied some medicine to the puppy's wound (1m) and gave it a bowl of milk.

37. They knew from the address on the puppy's collar.

38. It means near/ close to/ within walking distance.

English Language SA2 Mock Paper 1

Given on 18.10.2010 for PSLE Marking Days

Section A to G

Phrases to be highlighted are in Blue

1. 2
2. 1
3. 3
4. 2
5. 4
6. 3 (Mary & I, We )
7. 2 (last night, my brother)
8. 4 (They, now)
9. 2 (last night)
10. 1 (cake)
11. 2 (girl, over there)
12. 2
13. 4
14. 1
15. 4
16. 2
17. 2
18. 4
19. B entertain
20. A around
21. F shoving
22. C noticed
23. A feed (to)
24. B feeds (everyday, he)
25. F feeding
26. C fed (last week) / E had fed
27. E that
28. D on
29. C however
30. A along
31. As Ali was very hungry, he gulped down a plate of noodles in one minute.
32. Both June and Lina play the violin well.
33. The boys continued to play soccer in the field although the rain was very heavy.

Section H

34. She was watering the plants.

35. She wanted to find out what the men were doing.

36. One of the residents in the neighbourhood had dengue fever.

37. They lay eggs in some empty containers that contained stagnant water.

38. It refers to the empty containers.

Remarks:

• For Q1-5, please check the dictionary for the meanings of all the words.
• The same goes for Section E, find out the meanings of the words.

Maths Practice Paper

Done on: 8th Oct 2010

Distributed Back: 18th Oct 2010

Section A

1. (3)
2. (2)
3. (4)
4. (1)
5. (2)
6. (3)
7. (3) [Draw out the times, the answer will be clear]
8. (1) [Find angle PSV = 90- 37. Since TSVU is a square, angle a = 90 - angle PSV = 37]
9. (3)
10. (1)
11. (2) [Finding smallest possible sum of the 2 numbers means the lowest possible number for rounding up. For 800, it will be 750; and for 400, it will be 350. Thus, the sum will be 1100. ]
12. (1) [Convert all the fractions in the question to decimals first.]
13. (2)
14. (4)
15. (2)

Section B

16) A= 8345, B = 8210

17) 73, 800

18) 86 Mangoes

19) 11/42 [ 1 - 4/7 - 1/6 = 42/42 - 24/42 - 7/42]

20) 1/2

21a) QR/QZ

21b) SR

22) Restaurant

23) 0.545, 0.54, 0.455, 0.045

24) 1.46

25) 48

26) 80 marks

27) 150 pupils

28) DE = 2.25, EF = 3.5

29) 1|1/4 or 1.25 [3/4 + 0.5 = 0.75 +0.5]

30) $33.00 [Draw models]

31) 18 days [For such questions, it is always round up. If you round down, it means they did not save enough]

32a) 12 July

32b) 8.45pm / 20 45

33) 92cm^2 [total length is 23 cm, note overlapped part]

34) 925cm^2

Section C

35a) Money at first = (27 x 8) + 9

= $225.00

35b) Boxes at sales = $225 / 6

~ 37

More boxes = 37 - 27

= 10

36) Duck Eggs on Friday = 166 - 78

= 88

Total eggs on Fri = 166 + 88

= 254

Eggs sold on Sat = 254/2

= 127

Total eggs sold = 254 + 127

= 381

37) Each set, 1 cup + 1 plate = $7 + ($7-3)

= $11

Total sets bought = $264/ $11

= 24

Amount more = $24 x $3

= $72

38) Daisies = 1/5 x 240

= 48

Daisies removed = 1/3 x 48

= 16

Tulips = 3/8 x 240

= 90

Tulips removed = 5/6 x 90

= 75

Flowers left = 240 - 16 - 75

= 149

39) Draw Model, base unite 10. Yellow will take 4 units, purple will take 5, leaving only 1 unit for purple.

After drawing model, you will realise that

4 units -> 60

10 units -> 150

40) Total spent on crayons = $ $5.35 x 2

= $10. 70

Total spent on drawing books = $1.70 x 5

= $8.50

Amount Saved = ($10.70 + $8.50) - $16.99

= $2.21

41a) 19 05 - 13 35 = 5h 30mins

b) 21 00 - 19 05 = 1hr 55mins

42) List down all the factors for 54 & 102. Since it was given that W is a square, we must identify the common factor as the breadth of W = 6.

From this, we conclude that

Length of V = 102/6

= 17 cm

Breadth of V = 54/6

= 9 cm

Difference in Area = Area of V - Area of W

= (17 x 9 ) - ( 6 x 6 )

= 117 cm^2

Remarks:

• Many of you could not finish the paper within the 1hr 45 mins. Although the timing was not followed strictly, it is still crucial to manage your time properly.
• Do not be careless, read the question carefully and be sure to know what they are asking for. Highlight if need be.
• If you are unsure where to start, list down the information given as working.
• Ascending is from smallest to biggest, descending is from biggest to smallest.

Townsville CA 2008

Done on: 15 Sep 2010

Section C:
Q19) 1123 rubber bands

7406-668=6738

6738/6=1123

Q20) 135 marbles
180/4=45
marbles left = 45 x 3 = 135

Q21) $78.00
156/4=39
39 x 2 =78

Q22) 30
72/3 = 24
72-24-18 = 30

Q23) $1.00
5.65 x 4 =22.60
50-22.60 = 27.40
28.40 - 27.40 = 1.00

Q24) 8m
9.6/6 = 1.6
1.6 x 5 =8

Q25) 8 bears
if she buys 10 bears, she'll spend (10 x 10) + (3 x5) = 115
If she buys 9 bears, she'll spend (9 x 10) + (4 x 5) = 110
If she buys 8 bears, she'll spend (8 x 10) + (5 x 5) = 105

Q26) 10 years old
38-8 = 30
30/3 = 10

Remarks:

• Q20) 1 mark is deducted if you did not label the model "ming ming".
• For Q25, I deducted marks for those with only 1 line of working. There must be minimum 2 lines to show understanding; I also accepted other methods provided that you show understanding of the question.