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| How did you find the 2009 PSLE Maths Paper? |
| It was easy. I completed all questions and had time to check carefully. |
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13% |
[ 5 ] |
| It was ok. I completed all questions, but not really time to check my answers thoroughly. |
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13% |
[ 5 ] |
| It was a bit difficult. I completed all questions, but I'm sure I answered some incorrectly. |
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36% |
[ 13 ] |
| It was very difficult. I could not answer a number of the questions. |
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36% |
[ 13 ] |
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| Total Votes : 36 |
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harini
GreenBelt
Joined: 24 Aug 2008
Posts: 161
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 Posted: Sat Oct 10, 2009 1:47 pm Post subject: |
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Thanks!!! Read it, hope MOE is hearing  . |
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harini
GreenBelt
Joined: 24 Aug 2008
Posts: 161
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| Posted: Sat Oct 10, 2009 1:53 pm Post subject: |
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| Anybody knows the question and answer for the circle area and perimeter question. It carried 5 marks ... |
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StudentABC
YellowBelt
Joined: 10 Oct 2009
Posts: 12
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| Posted: Sat Oct 10, 2009 2:07 pm Post subject: |
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 Huh? But I remember that most questions carried 4 marks except the one on raj and devi's salary???only that question carried 5 marks...
Geometry- 4marks
Speed - 3marks
chocs and sweets- 4marks
raj and devi- 5marks
balloon- 4 marks
(P.S: I took the paper too and I did not know how to solve 4 questions so I paid extra attention to the marks awarded. Luckily I solved 3 but left the last one untouched(the one on speed).But i got the geometry wrong.  )
I think I die le. I went home and cried that day. In fact many ppl could not complete. i left the last step of the speed question untouched....It seems only 3 ppl from my school found the paper easy. But then they are the best at tackling competition maths questions in our school...1 of them said he got all questions correct so far.by the way, is the last question really 68??? So sad...   |
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mathsparks
KiasuGrandMaster I
Joined: 13 Mar 2009
Posts: 1633
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| Posted: Sat Oct 10, 2009 2:42 pm Post subject: |
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Hey studentabc,
don't let the maths paper affect you. Stop checking answers already! Stay away from this forum..go focus on yr science. Shoo!! |
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Guan Hui
YellowBelt
Joined: 10 Aug 2009
Posts: 34
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| Posted: Sat Oct 10, 2009 2:47 pm Post subject: |
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Hello this is what I get from the channelnewsasia forum. I am a tuition teacher who has students taking PSLE so I am quite concern too. Below are the questions and the suggested answers I provide.
PSLE Maths - some of the questions
Mei and Lin were in a bicycle race. Mei was travelling at a constant speed of 20km/hr and they both did not change their speed. When Lin completed half the race, Mei was 3.5km ahead. Mei completed the race at 10.45am. What time did Lin complete the race? Ans: 11.06am
Suggested Answer:
3.5 x 2 = 7km(how much ahead is mei if she keep cycling when Lin finish the race)
speed= 20km/h
7km= 7/20 X 1
=0.35 hr
=21 mins (time needed to be 7km ahead for mei)
Time when Lin complete the race = 10.45am+ 21mins
= 11.06am
Sally baked some cookies to sell. 3/4 of them were chocolate cookies and the remaining were almond cookies. After she sold 5/6 of chocolate cookies and 210 almond cookies, she had 1/5 of the cookies left. How many cookies did she sell? Ans: 960
Suggested Answer:
5/6 of chocolate cookie = 5/6 x 3/4
= 5/8 of total cookie (SOLD)
Faction of cookie sold = 1- 1/5
=4/5
Fraction of Almond cookie Sold = 4/5 - 5/8
= 7/40(SOLD == 210 almonds)
4/5= 32/40
7units =210 almonds
32 units = 32/7 x 210
= 960 cookies
Jim bought some chocolates and gave half of it to Ken. Ken bought some sweets and gave half of it to Jim. Jim ate 12 sweets and Ken ate 18 chocolates. The ratio of Jim's sweets to chocolates became 1 : 7 and the ratio of Ken's sweets to chocolates became 1:4. How many sweets did Ken buy?. Ans: 68 sweets
Suggested answer:
Jim Ken
sweet : Choco Sweet : Choco
1Junit : 7Junits 1Kunit: 4Kunits
1Junit+12 : 7Junits 1Kunit: 4Kunits +18 (before eating the sweets and the chocolates)
Since at the beginning they have the same number of sweets and chocolates.
1Junit + 12 = 1Kunit
4Junits +48 = 4Kunits
4Junits + 66 = 4Kunits +18 = 7Junits
3Junits= 66
1Junit= 22
Number of sweets Jim recieved at the beginning : 22 +12 =34 sweets
Number of sweets Ken buy : 34 +34 =68 sweets
(Regret cant show in model)
Curry puff shop sells puffs at $0.80 each. Offer:Buy 3 get 4th half price. If customer has $50, how many puffs can he buy if he buys as many as he can. Ans: 71 puff
Suggested Answers:
3 puffs : $0.80 x 3 =$2.40
4th puff: $0.80 / 2 =$0.40
1 set of 4 puffs cost: $2.40+$0.40=$2.80
Number of sets the customer can buy with $50: 50/2.8=17 sets and $2.40 left
Number of puffs $2.40 can buy: $2.40/$0.80 = 3puffs
Number of puffs in 17 sets: 17x 4 = 68 puffs
Total number of puffs: 68 +3=71 puffs
String of 2 big balloons is 90cm
String of 5 small balloons is is 1.2m
If both strings are of the same length, there would be 105 more small balloons than the big balloons. How many balloons are there altogether? Ans: 345
Suggested Answers:
String of 1 big balloon: 90cm/2 = 45cm
String of 1 small balloon: 120cm/5 = 24 cm
difference in the length of string: 45-24=21 cm
how much longer if they have the same number of big balloons and small balloons: 105(small balloons more) x 24= 2520 cm
The number of big balloons that will cause this difference: 2520/ 21 = 120
Number of big balloons: 120 balloons
Number of small balloons 120+105=225 balloons
Total: 120+225= 345 balloons
This is my 10cent worth of solution hope it helps to further confirm your children answers. Anymore enquires about maths you can call me at 94503822=) I will gladly assist you.
Good luck to all those children taking science and higher chinese next week=) |
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kohjl
GreenBelt
Joined: 09 May 2009
Posts: 151
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| Posted: Sat Oct 10, 2009 2:50 pm Post subject: |
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| StudentABC wrote: |
I think I die le. I went home and cried that day. In fact many ppl could not complete. |
Hey StudentABC
Don't feel too bad....you didn't do particularly badly because many students also could not do many sums, so you are not alone. Don't be sad....you must pull yourself together and aim to do well in Science which is on Monday.
When my eldest son took his PSLE a few years ago, he was also sulking after the Maths paper as it was also very difficult that year, but he did very well in the end. So you never know cos MOE will moderate the results.
So...focus on what's ahead! Don't lose hope, ok?
Last edited by kohjl on Sat Oct 10, 2009 2:51 pm; edited 1 time in total |
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harini
GreenBelt
Joined: 24 Aug 2008
Posts: 161
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| Posted: Sat Oct 10, 2009 2:51 pm Post subject: |
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| mathsparks wrote: | Hey studentabc,
don't let the maths paper affect you. Stop checking answers already! Stay away from this forum..go focus on yr science. Shoo!! |
Well said Mathssparks - GO and study, dont bother abt the Maths paper - thats already OVER ... |
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MrsLow
KiasuNewbie
Joined: 10 Oct 2009
Posts: 9
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| Posted: Sat Oct 10, 2009 4:06 pm Post subject: PSLE Maths |
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| meyya wrote: | | mathsparks wrote: | | haha I was wondering also. The only post that says Maths is easy.. |
my girl also told the maths is very difficult and time is not enough to do.
paper 1 can. paper 2 hard lah |
now... the ministry wants our children in Primary to know the topic well and knows the exact application...
Frankly speaking ... (personal opinion only), the Jim and Ken questions many assessment book came out similar questions already. The ministry probably wants the students to know the concepts rather than memorise steps and technique. As for the meilin speed questions... the formula of speed/Distance and Time must be clearly known... on top of that I see it as more of a rate question.
Devi and Raj is an old PSLE questions also...
pardon me if you think I am wrong...this is purely what I saw after knowing and doing many PSLE questions.
infact since the introduction of calculators...it is easier to combine model illustration with algebra to solve difficult questions.  |
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kiasipluskiasu
KiasuNewbie
Joined: 10 Oct 2009
Posts: 1
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| Posted: Sat Oct 10, 2009 4:11 pm Post subject: |
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hmmm...anyone remembers the question and answer for the pyramid question???if i remember clearly, its question7, the one on which net cannot be formed into the 'pyramid shown above'. Paper 1, Booklet A (MCQ question)  Pls help.Thanks.[/img] |
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Tang
GreenBelt
Joined: 13 Jun 2009
Posts: 136
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| Posted: Sat Oct 10, 2009 4:12 pm Post subject: |
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| Guan Hui wrote: | Hello this is what I get from the channelnewsasia forum. I am a tuition teacher who has students taking PSLE so I am quite concern too. Below are the questions and the suggested answers I provide.
PSLE Maths - some of the questions
Mei and Lin were in a bicycle race. Mei was travelling at a constant speed of 20km/hr and they both did not change their speed. When Lin completed half the race, Mei was 3.5km ahead. Mei completed the race at 10.45am. What time did Lin complete the race? Ans: 11.06am
Suggested Answer:
3.5 x 2 = 7km(how much ahead is mei if she keep cycling when Lin finish the race)
speed= 20km/h
7km= 7/20 X 1
=0.35 hr
=21 mins (time needed to be 7km ahead for mei)
Time when Lin complete the race = 10.45am+ 21mins
= 11.06am
Sally baked some cookies to sell. 3/4 of them were chocolate cookies and the remaining were almond cookies. After she sold 5/6 of chocolate cookies and 210 almond cookies, she had 1/5 of the cookies left. How many cookies did she sell? Ans: 960
Suggested Answer:
5/6 of chocolate cookie = 5/6 x 3/4
= 5/8 of total cookie (SOLD)
Faction of cookie sold = 1- 1/5
=4/5
Fraction of Almond cookie Sold = 4/5 - 5/8
= 7/40(SOLD == 210 almonds)
4/5= 32/40
7units =210 almonds
32 units = 32/7 x 210
= 960 cookies
Jim bought some chocolates and gave half of it to Ken. Ken bought some sweets and gave half of it to Jim. Jim ate 12 sweets and Ken ate 18 chocolates. The ratio of Jim's sweets to chocolates became 1 : 7 and the ratio of Ken's sweets to chocolates became 1:4. How many sweets did Ken buy?. Ans: 68 sweets
Suggested answer:
Jim Ken
sweet : Choco Sweet : Choco
1Junit : 7Junits 1Kunit: 4Kunits
1Junit+12 : 7Junits 1Kunit: 4Kunits +18 (before eating the sweets and the chocolates)
Since at the beginning they have the same number of sweets and chocolates.
1Junit + 12 = 1Kunit
4Junits +48 = 4Kunits
4Junits + 66 = 4Kunits +18 = 7Junits
3Junits= 66
1Junit= 22
Number of sweets Jim recieved at the beginning : 22 +12 =34 sweets
Number of sweets Ken buy : 34 +34 =68 sweets
(Regret cant show in model)
Curry puff shop sells puffs at $0.80 each. Offer:Buy 3 get 4th half price. If customer has $50, how many puffs can he buy if he buys as many as he can. Ans: 71 puff
Suggested Answers:
3 puffs : $0.80 x 3 =$2.40
4th puff: $0.80 / 2 =$0.40
1 set of 4 puffs cost: $2.40+$0.40=$2.80
Number of sets the customer can buy with $50: 50/2.8=17 sets and $2.40 left
Number of puffs $2.40 can buy: $2.40/$0.80 = 3puffs
Number of puffs in 17 sets: 17x 4 = 68 puffs
Total number of puffs: 68 +3=71 puffs
String of 2 big balloons is 90cm
String of 5 small balloons is is 1.2m
If both strings are of the same length, there would be 105 more small balloons than the big balloons. How many balloons are there altogether? Ans: 345
Suggested Answers:
String of 1 big balloon: 90cm/2 = 45cm
String of 1 small balloon: 120cm/5 = 24 cm
difference in the length of string: 45-24=21 cm
how much longer if they have the same number of big balloons and small balloons: 105(small balloons more) x 24= 2520 cm
The number of big balloons that will cause this difference: 2520/ 21 = 120
Number of big balloons: 120 balloons
Number of small balloons 120+105=225 balloons
Total: 120+225= 345 balloons
This is my 10cent worth of solution hope it helps to further confirm your children answers. Anymore enquires about maths you can call me at 94503822=) I will gladly assist you.
Good luck to all those children taking science and higher chinese next week=) |
Hi tutor,
"Time when Lin complete the race = 10.45am+ 21mins
= 11.06am"
When in P6, I was deducted 1 mark for mixing Time and Duration. Hence you may want to advise your students to use timeline.
For the balloon question, there has been a debate over 211 and 345. Apparently most P6 students do not seem sure which is correct. Do you happen to have the picture of the arrangement of the balloon from your student? |
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