2010 PSLE Mathematics

[ApronMama]

PSLEmom:

:? My DS was asking about a Geometry question....Trapezium figure ...what is the angle of EBC? ANy idea?

78 deg

-DS of apronmama

[beauty queen]

ApronMama:

PSLEmom:

:? My DS was asking about a Geometry question....Trapezium figure ...what is the angle of EBC? ANy idea?

78 deg

-DS of apronmama

you mean the isoceles question or the other one? other one how does the question look like?

the isoceles is 118

[JonC]

wonderm:

Since PSLE T-score is a measure of a child's performance relative to his cohort. An easy paper is not necessarily \"better\" than a difficult paper. It really depends on the child's strength in various subjects. If all papers are relatively easy, it will favor those students who are more careful and do not tend to make careless mistakes.


Since the absolute score does not really matter. I don't wish for easy papers, just wish my DS performs at his best whatever is the difficulty level of the paper.
...

Agree, better difficult than easy.

DS is the careless type and gets excited by getting the difficult question correct.

I was blasted by him once for scolding him for getting \"Simple Questions\" wrong with silly mistakes as I only look at the wrong answers, he pointed at 1 question saying that almost whole class get the difficult question wrong and he is one of the few who got it correct, I was angry and said \"SO, big due?\", that 1 question does not give you 100 marks.

[beauty queen]

JonC:

wonderm:

Since PSLE T-score is a measure of a child's performance relative to his cohort. An easy paper is not necessarily \"better\" than a difficult paper. It really depends on the child's strength in various subjects. If all papers are relatively easy, it will favor those students who are more careful and do not tend to make careless mistakes.


Since the absolute score does not really matter. I don't wish for easy papers, just wish my DS performs at his best whatever is the difficulty level of the paper.
...

Agree, better difficult than easy.

DS is the careless type and gets excited by getting the difficult question correct.

I was blasted by him once for scolding him for getting \"Simple Questions\" wrong with silly mistakes as I only look at the wrong answers, he pointed at 1 question saying that almost whole class get the difficult question wrong and he is one of the few who got it correct, I was angry and said \"SO, big due?\", that 1 question does not give you 100 marks.

wow he is like me!

[JonC]

tansm2010:

Today paper end at 12.00 noon, 15 minutes more to go!

Its 11.55am, not noon.

[wings98]

Same here. DS spent lots of time on Maths and yet it's easy... Does it imply that one is unlikely to get A* if he does not get close to 100 marks for Maths?[/quote]

[beauty queen]

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 18)

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/]

[beauty queen]

snowman.697:

I don't get you... What do you mean?

paper 2 question 7 the number of books red by class

[aada]

PSLEstudent2010:

livewith_vanilla:

[quote=\"snowman.697\"]*ALL ANSWERS CHECKED AND VERIFIED*


16.
(a) $11
(b) $31

17.
(a) 46 & 9
(b) 180
(c) 78(4?)

18.
15 mins

Yah



Yah! I check and checked and even asked fm my classmates.


Got 17 (C) wrong. Somehow managed to get 953.
c is wrong 782 :?
Paper was not difficult. Easy in fact.
><

for question 16, i got 9 and 29!! are u sure 11 and 31 is the correct answer?[/quote] :lol:

[beauty queen]

for question 16 answer is $11 and $31


here is the working

since they said meiling( i guess or just take it as that) has $7 more than she spent it should go

1 u spend+7=2 u left

since they total spend 3 u spend

3u spend + 21 = 6u left

they were left with 3u left

so 60+21=81

81/(6+3)=9 (1 u left)

(60-9-9-9)/3=11

the other girl had

9+11+11=31

feel free to ask other questions as well