2010 PSLE Mathematics
-
Vanilla Cake:
I see that you have changed the answer for 17 c) to 779.Hi,
Pls help to check and verify the answers as I got them from http://thinkingmath.com.sg/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html. Take note that the questions are not in exact words as appeared in the PSLE 2010 Maths exams.
Paper 1
Q1.\t3
Q2.\t1
Q3.\t1
Q4.\t3
Q5.\t3
Q6.\t4
Q7.\t3
Q8.\t1
Q9.\t2
Q10.\t2
Q11.\t4
Q12.\t4
Q13.\t2
Q14.\t1
Q15.\t4
Q16.\t9 cm \t
Q17.\t113°\t
Q18.\t3 and 11/25\t
Q19.\t1 and 5/21\t
Q20.\t0.625\t
Q21.\t6.4\t
Q22.\t1550 ml\t
Q23.\t$ 49.20\t
Q24.\t1/4\t
Q25.\t10:6:3\t
Q26.\t30 %\t
Q27.\t4.5 km/h\t
Q28.\t75 cm\t
Q29.\t60\t
Q30.\t5/9\t
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?\t
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)\t\t
a) Find how much wire he used to form this figure.\t\t
b) If k=15, find the length of wire that he did not use.\t\t
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?
-----------------------------------------------------------\t\t\t\t
| Average number of Books | Number of Pupils |\t\t\t\t
-----------------------------------------------------------\t\t\t\t
| 0 | 10 |\t\t\t\t
| 8 | 15 |\t\t\t\t
| ? | 5 |\t\t\t\t
-----------------------------------------------------------\t\t\t\t
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?\t
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.\t
(a)Find the cost of the pair of shoes.\t
(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) $31
Q17
Structure Number Number of Rods Height (cm)\t\t\t\t
------------------------------------------------------------\t\t\t\t
1 12 3\t\t\t\t
2 20 3\t\t\t\t
3 25 6\t\t\t\t
4 33 6\t\t\t\t
5 38 9\t\t\t\t
6\t\t\t\t
------------------------------------------------------------\t
a) Fill in the number of of rods and height for structure 6. [1 mark]
b) Find the height of Structure 119. [2 marks]
c) Find the number of rods for Structure 119. [2 marks]
Ans (a)46 and 9 (b)180 (c)779
Q18
Tank B is empty and Tank A is 1/3 filled. Water flows in from a tap at a constant rate of 1.2 litres per minute.How long will it take for both tanks to be of the same height?
Refer to http://thinkingmath.com.sg/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html?limit=10&start=10.
Ans: 15 min
But what I remember of the series given is that
1 ---------------------15
2 ------------------- 20
3 ------------------- 28
4 ------------------- 33
5 -------------------- 41
6 -------------------- 46
Can anyone confirm this for me ?
How can a P6 student confuse this series with
1---------------------- 12
2 --------------------- 20
3---------------------- 25
4---------------------- 33
5 --------------------- 38
6 --------------------- 46
:? -
blessedami:
I see that you have changed the answer for 17 c) to 779.Vanilla Cake:
Hi,
Pls help to check and verify the answers as I got them from http://thinkingmath.com.sg/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html. Take note that the questions are not in exact words as appeared in the PSLE 2010 Maths exams.
Paper 1
Q1.\t3
Q2.\t1
Q3.\t1
Q4.\t3
Q5.\t3
Q6.\t4
Q7.\t3
Q8.\t1
Q9.\t2
Q10.\t2
Q11.\t4
Q12.\t4
Q13.\t2
Q14.\t1
Q15.\t4
Q16.\t9 cm \t
Q17.\t113°\t
Q18.\t3 and 11/25\t
Q19.\t1 and 5/21\t
Q20.\t0.625\t
Q21.\t6.4\t
Q22.\t1550 ml\t
Q23.\t$ 49.20\t
Q24.\t1/4\t
Q25.\t10:6:3\t
Q26.\t30 %\t
Q27.\t4.5 km/h\t
Q28.\t75 cm\t
Q29.\t60\t
Q30.\t5/9\t
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?\t
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)\t\t
a) Find how much wire he used to form this figure.\t\t
b) If k=15, find the length of wire that he did not use.\t\t
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?
-----------------------------------------------------------\t\t\t\t
| Average number of Books | Number of Pupils |\t\t\t\t
-----------------------------------------------------------\t\t\t\t
| 0 | 10 |\t\t\t\t
| 8 | 15 |\t\t\t\t
| ? | 5 |\t\t\t\t
-----------------------------------------------------------\t\t\t\t
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?\t
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.\t
(a)Find the cost of the pair of shoes.\t
(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) $31
Q17
Structure Number Number of Rods Height (cm)\t\t\t\t
------------------------------------------------------------\t\t\t\t
1 12 3\t\t\t\t
2 20 3\t\t\t\t
3 25 6\t\t\t\t
4 33 6\t\t\t\t
5 38 9\t\t\t\t
6\t\t\t\t
------------------------------------------------------------\t
a) Fill in the number of of rods and height for structure 6. [1 mark]
b) Find the height of Structure 119. [2 marks]
c) Find the number of rods for Structure 119. [2 marks]
Ans (a)46 and 9 (b)180 (c)779
Q18
Tank B is empty and Tank A is 1/3 filled. Water flows in from a tap at a constant rate of 1.2 litres per minute.How long will it take for both tanks to be of the same height?
Refer to http://thinkingmath.com.sg/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html?limit=10&start=10.
Ans: 15 min
But what I remember of the series given is that
1 ---------------------15
2 ------------------- 20
3 ------------------- 28
4 ------------------- 33
5 -------------------- 41
6 -------------------- 46
Can anyone confirm this for me ?
How can a P6 student confuse this series with
1---------------------- 12
2 --------------------- 20
3---------------------- 25
4---------------------- 33
5 --------------------- 38
6 --------------------- 46
:?
hey i posted the solutions wait i will give you the link cheers!
DS of BQ -
beauty queen:
I see that you have changed the answer for 17 c) to 779.blessedami:
[quote=\"Vanilla Cake\"]Hi,
Pls help to check and verify the answers as I got them from http://thinkingmath.com.sg/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html. Take note that the questions are not in exact words as appeared in the PSLE 2010 Maths exams.
Paper 1
Q1.\t3
Q2.\t1
Q3.\t1
Q4.\t3
Q5.\t3
Q6.\t4
Q7.\t3
Q8.\t1
Q9.\t2
Q10.\t2
Q11.\t4
Q12.\t4
Q13.\t2
Q14.\t1
Q15.\t4
Q16.\t9 cm \t
Q17.\t113°\t
Q18.\t3 and 11/25\t
Q19.\t1 and 5/21\t
Q20.\t0.625\t
Q21.\t6.4\t
Q22.\t1550 ml\t
Q23.\t$ 49.20\t
Q24.\t1/4\t
Q25.\t10:6:3\t
Q26.\t30 %\t
Q27.\t4.5 km/h\t
Q28.\t75 cm\t
Q29.\t60\t
Q30.\t5/9\t
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?\t
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)\t\t
a) Find how much wire he used to form this figure.\t\t
b) If k=15, find the length of wire that he did not use.\t\t
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?
-----------------------------------------------------------\t\t\t\t
| Average number of Books | Number of Pupils |\t\t\t\t
-----------------------------------------------------------\t\t\t\t
| 0 | 10 |\t\t\t\t
| 8 | 15 |\t\t\t\t
| ? | 5 |\t\t\t\t
-----------------------------------------------------------\t\t\t\t
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?\t
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.\t
(a)Find the cost of the pair of shoes.\t
(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)\t\t\t\t
------------------------------------------------------------\t\t\t\t
1 12 3\t\t\t\t
2 20 3\t\t\t\t
3 25 6\t\t\t\t
4 33 6\t\t\t\t
5 38 9\t\t\t\t
6\t\t\t\t
------------------------------------------------------------\t
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 http://thinkingmath.com.sg/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html?limit=10&start=10.
Ans: 15 min
But what I remember of the series given is that
1 ---------------------15
2 ------------------- 20
3 ------------------- 28
4 ------------------- 33
5 -------------------- 41
6 -------------------- 46
Can anyone confirm this for me ?
How can a P6 student confuse this series with
1---------------------- 12
2 --------------------- 20
3---------------------- 25
4---------------------- 33
5 --------------------- 38
6 --------------------- 46
:?
hey i posted the solutions wait i will give you the link cheers!
DS of BQ[/quote]here you go
for those who do not know how to do the pattern question here is my solution.
untill patern 3 , it increased by 8 right? After that it increases by five. Students may become pretty confused. when seeing this. Then it increases by 8 again. So it should increase by 5 for pattern 6 so it should be 46 rods. For height it increases by 3 after every even number (multiples of 2). So pattern 6 is : (6/2)x3 = 9 height for pattern 119 is
119-3=116 ( beacuse for the first three patterns it increases y 8 then it increases by 5 and 8 respectively)
116/2 = 58
So there are 58 5 rod cubes and 58 8 rod cubes.
58x5 + 58x8 = 754
Now you have to add 28 to it ( the total of the first three patterns)
754 +28=782
now for height of pattern 119: like i have mentioned earlier the height increases by an even number by three cm. Since pattern 19 is not n even number minus one
119-1=118
118/2 = 59
There are 59 sets of 3
59x3=177 (height for pattern 1
we found out 117 is the height for pattern18
now add another three cm to it. I think you know why.
177+3=[color=red]180[colour/]
Mods sorry for repetation
DS of BQ -
MOE Hater:
71
same hi-5!!
:celebrate: 
-
This year’s Math PSLE was acceptable for pupils weak in maths and easy to pupils who excel in maths. Unlike previous years when parents complain of difficult questions, this year’s paper was better. MOE sure did the right thing, with tougher questions at the last part of paper 2.
Thumbs up to MOE this year! -
There were also some toughies in booklet A… luckily there’s no parents who complain in ST review…
-
Please post the psle 2010 math MCQ( Multiple Choice Questions) here. thank you.
-
"easy paper means lower T score…some parents pray for difficult paper". Is this true? Heard from expert parents.
-
Hi , my son says that the pattern is as follows :
1 ---------------------12(rods needed to make a cube)
2 ------------------- 20
3 ------------------- 28
4 ------------------- 33
5 -------------------- 41
6 -------------------- 46 -
hashroop:
\"easy paper means lower T score..some parents pray for difficult paper\". Is this true? Heard from expert parents.
If my child was gifted in math, yes, I'd definitely wish for a tough paper. Otherwise how would you distinguish the brilliant from the above average if everyone scores 100?
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