Q&A - PSLE Math
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ck123:
HiMaster Tian zhu
i managed to solve Q15 but not Q14b yet
You’re welcome.
Paiseh, please do not address me as master, I am just an ordinary dad.
I am sorry, I don’t have a set of 2011 test papers as I am a post PSLE dad.
Please post the questions if you need clarification.
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[/list]Best wishes
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Hi ck123,
Just to share DD's working for RGS Q14b:
2.5 x 2 = 5
1.4 x 2 = 2.8
5 x 2.8 = 14
Answer: 14 cm2
Hope the above is useful. -
Hi Brenda 10
Thanks for the working. I got it.
Hi Tian zhu
I will try again with the picture upload.
Thanks all -
ck123:
Hi ck123,Hi Brenda 10
Thanks for the working. I got it.
You're welcome!
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ck123:
Join the points OT and draw a vertical line from B to the horizontal line OD.:thankyou: tianzhu
Can u help to explain how to see Radius of semi-circle is 11.75 :scratchhead: for Q17
You can see that the 2 small right angled triangles are identical.
Therefore OT = BD = 11.75 cm
That is radius of the semicirlce = 11.75 -
Pls help to solve the following :-
Alan had some apples and oranges. There were 75 more apples than oranges. After he sold 4/5 of the apple & 3/4 of the oranges, he had 285 fruits left. How many apples did he have at 1st？ -
Anyone tried raffles 2011 prelim paper? I don’t have a scanner. If any of you have the question for P2 Q 17, can you please share how to solve?
Thanks -
Pls help to solve the following :-
Alan had some apples and oranges. There were 75 more apples than oranges. After he sold 4/5 of the apple & 3/4 of the oranges, he had 285 fruits left. How many apples did he have at 1st？ -
Thanks All
Ai yo , finally managed to see that the radius is the same as AD. Paiseh. -
Daddy:
Q2.Thanks MathIzzzFun
![](\"http://i56.tinypic.com/2mgwklt.jpg\")
http://i56.tinypic.com/2mgwklt.jpg\">
cheers.[/quote]
How did you get 3: 2 ratio of Mary to John?
How about John bought 40% of the totalnumber of clips and ribbons?
I am not quiet understand. Sorry for that.[/quote]
Hi
John bought 40% of total number of ribbons and clips, so Mary bought 60% of total number of ribbons and clips.
Ratio of total number bought by Mary to John = 60 : 40 = 3:2
cheers.
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