2010 PSLE Mathematics
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PSLEstudent2010:
for the shopping question, my answer is 9 and 29!!beauty queen:
[quote=\"beauty queen\"]
not to offend your ds i found it easy i posted the answers on the psle buzz thread check it out!! All the best to your ds :celebrate:
DS of Beauty Queen
Here you go~
The pattern question is 46 , 9, 180 and 782
the shopping question is 11 and 31
The tap question is 15
The spped question paper 2 is 125m/min paper 1 4.5 km/h
yeah want to know any other answrs for question just ask.
DS of Beauty Queen
are you sure yours is correct??
I am simply so dumb! at the very LAST MINUTE, i went to change my correct answer to a wrong one!!! AAAAAAAAAAH![/quote]Yes it's 11 and 31. I used guess and check to double check the answer. -
blessedami:
What's the question for paper 2 Q3?Anyone remember?
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
:?
Anyway,I think for paper 2 I got Q17C,Q7 and maybe Q14b wrong only but for Q14b i forgot what's my answer so didnt know if im right or wrong. -
Is it the amt. of money she had left question? If so,
1 - 5/12 = 7/12
$133.50 x 7/5 = $189.90 -
the kiasu student:
SERIOUSLY!!! As if I don't hate MOE enough! :x Why did they make it easy??!!! I want a hard paperThis 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!
-
MOE Hater:
Thks.aada:
Wad's paper 2 question 4? I need 2 check my answers
Is it the area of the quadilateral question? I split it into two right angled triangles. So,
1/2 x 7 x 9 + 1/2 x 3 x 11 = 48
Ans: 48cm2
Hope this helps.
:lol: -
blessedami:
Yes, based on my visualization of the structure, item 3 should be 28, thereby the CORRECT answer to Q17c is indeed 782.
Thanks,ekanil:
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
Yes, I got the first number in the series wrong, regardless of which the answer is 782.
I am utterly impressed with the kids nowadays, they can summarise almost the whole exam papers a few hours after taking it, :celebrate:
This boy JianRong and his friends deserves a pat on their back.
http://www.onsponge.com/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html?limit=10&start=30
However, the relatively Maths paper is a little unkind to those who excel, as there were NO real difficult questions. DS said he was only able to use algebra once and it was a giveaway ( Q18 ). We should see a lot of A* this year.
Agreed with MOE Hater, the paper should have a few tough questions, as in 2009.
I sincerely believe this year's P6 cohort is one of the best academically in recent years, though the PSLE Tscore may not reflect so ultimately, due to the relatively easy papers so far for English, maths and Chinese. Easy papers raised the Median Score and affects the Standard Deviation substantially.
Jiayu to all
-
i got 46
, 9cm, 180cm, and 782 for the 2nd last qn.
an somebody tell me if that is confirm correct or not? -
Strparent:
Yes, based on my visualization of the structure, item 3 should be 28, thereby the CORRECT answer to Q17c is indeed 782.
Thanks,blessedami:
[quote=\"ekanil\"]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
Yes, I got the first number in the series wrong, regardless of which the answer is 782.
I am utterly impressed with the kids nowadays, they can summarise almost the whole exam papers a few hours after taking it, :celebrate:
This boy JianRong and his friends deserves a pat on their back.
http://www.onsponge.com/forum/35-thinkingmathonsponge/5790-how-did-you-do-psle-math-2010.html?limit=10&start=30
However, the relatively Maths paper is a little unkind to those who excel, as there were NO real difficult questions. DS said he was only able to use algebra once and it was a giveaway ( Q18 ). We should see a lot of A* this year.
Agreed with MOE Hater, the paper should have a few tough questions, as in 2009.
I sincerely believe this year's P6 cohort is one of the best academically in recent years, though the PSLE Tscore may not reflect so ultimately, due to the relatively easy papers so far for English, maths and Chinese. Easy papers raised the Median Score and affects the Standard Deviation substantially.
Jiayu to all[/quote]i agree. better more difficult paper so good pupils can show more potential.
heard that they qoing to raise the A star so not many pupils get A star for math. -
lightbulb:
All right. lucky u :celebrate:i got 46
, 9cm, 180cm, and 782 for the 2nd last qn.
an somebody tell me if that is confirm correct or not? -
kiasiparent:
In T-score computing, the 'mean' and the SD (Std Deviation) are the key-factors. If so many students score 100/100 or A*, then both 'mean' and 'SD' will be unusually high. In that case, the T-score will be lower.hashroop:
\"easy paper means lower T score..some parents pray for difficult paper\". Is this true? Heard from expert parents.
if you can get 100/100, how to get low t-score?
Innocent students rejoice at the easy Maths paper since their raw scores will be higher. Unfortunately, since T-scores will be lower, I feel there is not much justification for the rejoicing. Finally, it is the T-score that really matters. Is it not?
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