2015 PSLE Discussion and Strategies

[Popick]

Iluvmathnscience:

:imsorry:

phtthp:

[quote=\"ttssnm\"]
Choir qn
30% of Choir members and 40% of the Band members are girls.There are an equal number of boys in Choir and Band and the number of girls in Choir is 20 more than the girls in Band.How many Choir members are there?

Table qn
Someone bought 1 table and 4 chairs with a total amount of $945.The cost of a chair is 2/7 of the table.How much is the table?

How to solve choir / band qn ?
Algebra method ?

Using equivalent fractions.

70/100 Choir = 60/100 Band
7/10 Choir = 3/5 Band
21/30 Choir = 21/35 Band

Choir: Band
30:35

Choir girls: 9u
Band girls: 14u
Difference: 14u - 9u = 5u
5u -> 20
1u -> 20÷5=4
30u-> 30 x 4 = 120[/quote] :goodpost:

[Supitsme]

Poppick only for 15b) not for the whole question thx

[tysjason]

Is there any kind soul who is willing to compile all the questions of PSLE Math Paper 2?

[enjie]

How come you can remember the questions & answers?

[curiousage]

NerdyMath:

Supitsme:

And there is one snt question

Upon seeing the cat chasing the toy mouse ,The children laughed. What's the answer for this?

On the sight of seeing the cat chasing the toy mouse, the children laughed.

Isnt it.. The children laughed on the sight of seeing the cat chasing the toy mouse.

[ShinigamiGod]

If anyone needs help with math, feel free to ask me and I’ll solve it.

[curiousage]

Iluvmathnscience:

:imsorry:

phtthp:

[quote=\"ttssnm\"]
Choir qn
30% of Choir members and 40% of the Band members are girls.There are an equal number of boys in Choir and Band and the number of girls in Choir is 20 more than the girls in Band.How many Choir members are there?

Table qn
Someone bought 1 table and 4 chairs with a total amount of $945.The cost of a chair is 2/7 of the table.How much is the table?

How to solve choir / band qn ?
Algebra method ?

Using equivalent fractions.

70/100 Choir = 60/100 Band
7/10 Choir = 3/5 Band
21/30 Choir = 21/35 Band

Choir: Band
30:35

Choir girls: 9u
Band girls: 14u
Difference: 14u - 9u = 5u
5u -> 20
1u -> 20÷5=4
30u-> 30 x 4 = 120[/quote]They asked for the members in band.

[curiousage]

ZhenghuaParent:

I thought the Band and Choir question should be like this instead?


70% of Band members and 60% of Choir members are girls. There is an equal number of boys in Band and Choir. There are 20 more girls in Band than Choir. How many members are there in Band?
100%-70%=30%
100%-60%=40%
30%=3/10
40%= 4/10

3/10 of Band members = 4/10 of Choir members
= 12/40 of Band members = 12/30 of Choir members

Band has 40 Units of members and Choir has 30 Units of members.

70% X 40 Units = 28 Units of Girls in Band
60% X 30 Units= 18 Units of Girls in Choir

28 Units - 18 Units= 10 Units
10 Units -> 20
1 Unit=20/10
1Unit = 2
Number of Band members
= 40 Units
=40 X 2
=80

I agree with you.

[sunnybear]

Hi anyone remember roughly the potted plants question ?

[Supitsme]

From the answers how many of you have scored 75 and above for math?