Q&A - PSLE Math

[ximinful]

maychang:

Hi, my dd had gotten the answer is 216 members in March, but the answer key is 432 membe

Can anyone help to confirm if the answer key is wrong? My dd said her answer is correct.
Thanks.

The numbers of members in swimming club increased by 25% in February compared to January.
However, the number of members in March dropped by 10% compared to February. If the difference in the number of members between January and February was 48, how many members were there in March?

My Ans is also 216

[dicoyote]

Hi,


Need help on this question, thanks

A fruit seller had some oranges, pears, and durians. After selling some of them, there were 6 pears for every 5 oranges left and 7 oranges for every 3 durians left. He sold 168 oranges. He had 456 pears and oranges left. The number of pears sold was the same as the number of durians sold.
a) How many oranges had he at first?
b) If the number of pears was twice the number of durians at first, what was the total number of pears and durians sold?

[small]

dicoyote:

Hi,


Need help on this question, thanks

A fruit seller had some oranges, pears, and durians. After selling some of them, there were 6 pears for every 5 oranges left and 7 oranges for every 3 durians left. He sold 168 oranges. He had 456 pears and oranges left. The number of pears sold was the same as the number of durians sold.
a) How many oranges had he at first?
b) If the number of pears was twice the number of durians at first, what was the total number of pears and durians sold?

Hi dicoyote,

This question was discussed in the past as there was a problem with the number, change 456 to 462 and you should be able to solve the question.

Please refer to this, http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=6373&postdays=0&postorder=asc&start=2480

[dicoyote]

Hi small,


Thanks for the reply, glad that you pointed out the link on the possible mistake within the question

small:

dicoyote:

Hi,

Need help on this question, thanks

A fruit seller had some oranges, pears, and durians. After selling some of them, there were 6 pears for every 5 oranges left and 7 oranges for every 3 durians left. He sold 168 oranges. He had 456 pears and oranges left. The number of pears sold was the same as the number of durians sold.
a) How many oranges had he at first?
b) If the number of pears was twice the number of durians at first, what was the total number of pears and durians sold?

Hi dicoyote,

This question was discussed in the past as there was a problem with the number, change 456 to 462 and you should be able to solve the question.

Please refer to this, http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=6373&postdays=0&postorder=asc&start=2480

[MathIzzzFun]

Chenonceau:

http://i46.tinypic.com/2jez6fo.jpg\">


Can someone help? Thanks!

Hi
may I know the source of the question ? I think this is beyond P6 syllabus.

I did a quick calculation using trigo and pythagoras, Area A = 1.72 cm² (to 2 decimal places, and with pi=3.14).

cheers.

[Mychildren]

Chen,

U scared me! I thought why p6 maths has become so difficult. :nailbite:

[zanen]

hello can someone help me wif my hw? Justin baked some pies. 1/3 of the pies were chicken pies & the rest were vegetable pies. He packed 3/4 of the vegetable pies into big boxes & the rest of the vegetable pies into small boxes. each big box of vegetable pies made up 1/12 of the total no. of pies. Each small box of vegetable pies made up 1/16 of the total no of pies.


How many big boxes of vegetable pies were there?

How many small boxes of vegetable pies were there?

[slamdunk168]

anyone can help with this ? tks.


a) 4 children decided to find out their total mass. as they did not want their friends to know their individual mass, the children decided to weigh themselves 3 persons at a time. Although the children tried all possible ways of grouping themselves into threes for weighing, only 4 different readings were repeatedly recorded on the weighing scale.
99.5kg, 108.1kg, 111.7kg, 116.3kg
Find the combined mass of the heaviest and lightest child.

b) At a swimming meet, School A had 18 more representative than School B and 6 fewer representatives than School C. The ratio of the no. of boys to girls from the 3 schools was 1:3.
The raios of the no. of boys to the no. of girls in School A, B and C were 1:3, 1:5 and 2:5 respectively.
How many representatives from the 3 schools were there in all ?

[MathIzzzFun]

slamdunk168:

anyone can help with this ? tks.


a) 4 children decided to find out their total mass. as they did not want their friends to know their individual mass, the children decided to weigh themselves 3 persons at a time. Although the children tried all possible ways of grouping themselves into threes for weighing, only 4 different readings were repeatedly recorded on the weighing scale.
99.5kg, 108.1kg, 111.7kg, 116.3kg
Find the combined mass of the heaviest and lightest child.

This was discussed in earlier thread - http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=69&t=280&start=7880

cheers.

[MathIzzzFun]

slamdunk168:

anyone can help with this ? tks.



b) At a swimming meet, School A had 18 more representative than School B and 6 fewer representatives than School C. The ratio of the no. of boys to girls from the 3 schools was 1:3.
The raios of the no. of boys to the no. of girls in School A, B and C were 1:3, 1:5 and 2:5 respectively.
How many representatives from the 3 schools were there in all ?

discussed at
- http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=69&t=280&start=7970

-http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=69&t=280&start=7960

cheers.