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Re:P5 maths- area of Triangle
(Forum/ThinkingMath@OnSponge)
... when he comes back from school. As I have not seen the marked paper with correction, I am unable to comment on whether his teacher allows "Guess n Check" or only set strategy which I would love to ...
Friday, 03 September 2010
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Converting Fractions into decimals
(Forum/ThinkingMath@OnSponge)
Hi everyone! I find it a bit complicated when it comes to converting fractions into decimals. This question is really famous and a give away during exams so I can't afford losing marks because of this. ...
Monday, 30 August 2010
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P6 SA1 Science Paper on Condensation
(Forum/Science)
Q: As Aaron was driving to work in the morning, he turned on the air-conditioner in his car. After a while, he noticed that the windows of his car had become misty. Temperature in the car was 18 degree ...
Sunday, 29 August 2010
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Re: P6 - Percentage (25/Aug)
(Forum/ThinkingMath@OnSponge)
dont understnad where this 3(9u+44)=2(8u+71/2u-30) comes from ...
Thursday, 26 August 2010
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P5 Maths
(Forum/ThinkingMath@OnSponge)
... values added. a)What fraction of the outcomes adds up to a sum divisible by 7? b)What fraction of the outcomes adds up to a sum divisible by 3? Draw a table to list out. B,1,3,5,7,11,13 4,5,7,9,11,15,17 8,9,11,13,15,19,21 18,19,21,23,25,29,31 24,25,27,29,31,35,37 30,31,33,35,37,41, ...
Wednesday, 25 August 2010
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Re:P5 Remainder Concept
(Forum/ThinkingMath@OnSponge)
... I do not use models for Remainder questions as, in my opinion, is more difficult especially when it comes to the more complicated questions. I mean no disrespect, however, this question is one of the ...
Wednesday, 25 August 2010
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Re:P5 Remainder Concept
(Forum/ThinkingMath@OnSponge)
... better, not sure if you have come across questions on remainder concept with fraction, percentage and ratio in one question? Thank you. ...
Wednesday, 25 August 2010
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P5 Maths
(Forum/ThinkingMath@OnSponge)
... 4, 8, 18, 24, 30 and 36. The dice are tossed together and their values added. a) What fraction of the outcomes adds up to a sum divisible by 7? b) What fraction of the outcomes adds up to a sum divisible ...
Tuesday, 24 August 2010
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Re: P6 Synthesis and Transformation Help Needed
(Forum/Language & Humanities)
Jian Rong, No. The word 'her' is understood to refer to Siti Instead of using, Much to Siti's surprisr,Siti emerged as the overall champion (which would become repetitive) we use 'her' ...
Tuesday, 24 August 2010
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RE: Brakin the rule
(Forum/ThinkingMath@OnSponge)
@Amanda. Yes. All individuals are welcome whether they are a student, parent, teacher, tutor. The objective of the forum is to share our collective experience in solving Primary school questions. ...
Sunday, 22 August 2010
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Re:Simultaneous Equations
(Forum/ThinkingMath@OnSponge)
... result I need to multiply by 4. So the question becomes, why do we need to multiply by anything? This style of questions have 2 unknown things, in this case the number passed and the number failed. ...
Friday, 20 August 2010
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Re:P6 Maths
(Forum/ThinkingMath@OnSponge)
... After 42 apples are transferred from Box A to Box B, the ratio of the number of apples to the number of pears in Box A becomes 1:2. Find the ratio of apples to pears in Box B in the end. [USER POSTED ...
Wednesday, 18 August 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
... in Box A as in Box B. After 42 apples are transferred from Box A to Box B, the ratio of the number of apples to the number of pears in Box A becomes 1:2. Find the ratio of apples to pears in Box B in ...
Tuesday, 17 August 2010
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Re: P6 gaps and differences
(Forum/ThinkingMath@OnSponge)
Hi Ally 50x+$3-$4-20x=7.40 30x In line 5, +$3-$4 becomes -$1 therefore, -$1 becomes +$1+7.40 therefore 30x=7.40+1=8.40 ...
Monday, 16 August 2010
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Re:P6 Maths
(Forum/ThinkingMath@OnSponge)
... $1100 left when JAson has spent all his money. What is the amount of money Jason has ? This has become a quite common question and a number of them can be found in the P6 book: - Pg 9 & Pg 10, Qn ...
Monday, 16 August 2010
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P5 math onsponge unit 4.3 example
(Forum/ThinkingMath@OnSponge)
... to buy one more water bottle which cost $36, the average price would become $14. Find the total number of water bottles he bought. The answer given is 11 water bottles. But I work out the answer should ...
Wednesday, 11 August 2010
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P6 Science
(Forum/Science)
:cheer: Pls help me for the Science questions.Urgent!!! Q1)Habitats have different temperature conditions. State one reason why the pond habitat does not become as hot as the field habitat. Q2a)Explain ...
Saturday, 31 July 2010
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Re:Life Science - Cell
(Forum/Science)
answer is 4. cells do not give birth to new cells they divide. after 10 min the first first becomes 2. after another 10 min those two split into two so now you have four http://www.ehow.com/how-doe ...
Saturday, 31 July 2010
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Re:P5 Math . Need Help!!!
(Forum/ThinkingMath@OnSponge)
... 19kg of the flour, the empty basket becomes 2/5 as heavy as the remaining flour. How many KG of flour did the grocer have at first? For this question we can use External Unchanged However, there ...
Friday, 30 July 2010
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P5 Internal Transfer
(Forum/ThinkingMath@OnSponge)
... of the flour, the empty basket becomes 2/5 as heavy as the remaining flour. How many KG of flour did the grocer have at first? ...
Friday, 30 July 2010
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Re:Constant Difference & Remainder
(Forum/ThinkingMath@OnSponge)
... that comes to my mind is to get rid of the fractions like this. -- 1/10A - 1/10B --> 1. A is larger number and B is bigger number -- A - B --> 10 Now you can draw a model, if you need, and you ...
Thursday, 29 July 2010
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Re:Science -- Materials
(Forum/Science)
If I am not wrong, the materials in Group X are made from plants once alive. Envelopes are made from paper which comes from trees. Balloons are made from rubber/latex from rubber trees. In Group Z, ...
Thursday, 29 July 2010
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Re:Help with Algebra
(Forum/ThinkingMath@OnSponge)
... the reliance on models will slowly diminish as you become more familiar with algebra and other techniques. ...
Wednesday, 28 July 2010
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Re:Chap 9 Key Constructs
(Forum/ThinkingMath@OnSponge)
... information that I could get through inferencing. If I still do not see how to proceed, I do another question and come back to it 10-15 minutes later - hopefully with a different set of eyes to see the ...
Tuesday, 27 July 2010
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Working Backwards with Ratios
(Forum/ThinkingMath@OnSponge)
... marbles becomes 4:1:2.What is the total number of marbles in the three boxes now ? ...
Wednesday, 21 July 2010
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Re: P5 MGS SA1 2009
(Forum/ThinkingMath@OnSponge)
Thanks. I've been cracking my head to come up with a formulae. ...
Tuesday, 20 July 2010
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Re:2009 P6 SA2 SCGS MATHS Constant Difference
(Forum/ThinkingMath@OnSponge)
the ratio of the amount of money colin has to the amount of money daniel has is 4:7. after each of them spends $28, their ratio becomes 3:7. find the amount of money colin has now. As they both spent ...
Monday, 19 July 2010
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2009 P6 SA2 SCGS MATHS Constant Difference
(Forum/ThinkingMath@OnSponge)
the ratio of the amount of money colin has to the amount of money daniel has is 4:7. after each of them spends $28, their ratio becomes 3:7. find the amount of money colin has now. i got $48 but the ...
Sunday, 18 July 2010
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Re:P6 Maths
(Forum/ThinkingMath@OnSponge)
Your welcome. There are generally a number of ways to solve a problem. The answer sheet is not able to list out all the various solutions otherwise the books would be 3 or 4 times as big :) One of the ...
Friday, 16 July 2010
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Re: Constant Difference
(Forum/ThinkingMath@OnSponge)
... except the sentence. We change it to "May was 12 yrs old when Jame's age was twice Ali's age." Then: - the difference in age between James and Ali will become 12 + 2u - the value of 1unit changes to ...
Friday, 16 July 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
... may come forward with their comments. ...
Tuesday, 13 July 2010
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Re:Total Unchanged (Internal Transfer)
(Forum/ThinkingMath@OnSponge)
... marbles becomes 2:3. (a) what is the ratio of Terry's marbles to Alex's marbles at first? This question uses the Total Unchanged concept to determine the ratio at first. We are required to use the ...
Wednesday, 07 July 2010
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Unchanged Total
(Forum/ThinkingMath@OnSponge)
... marbles becomes 2:3. (a) what is the ratio of Terry's marbles to Alex's marbles at first? I don't understand the working to the answer provided. Tx in advance. ...
Wednesday, 07 July 2010
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Re:P6 - Math Problem Solving
(Forum/ThinkingMath@OnSponge)
... So we can substitute the 24 children with 16 adults 24 child + 8 adults becomes 16 adults + 8 adults = 24 adults 30 adults - 24 adults --> 6 adults The bus can accommodate another 6 adults ...
Sunday, 04 July 2010
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Re:P6 Maths
(Forum/ThinkingMath@OnSponge)
... one now. So I will come back later and check to see if nobody else has done the second. Also, I have not checked this yet. So check my answer - the working steps should be the same. Before S : B 4 ...
Friday, 02 July 2010
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P6 Maths Prelim 2009 Qs
(Forum/ThinkingMath@OnSponge)
... to create a sticky thread to guide and teach members of this forum on how to post images/diagrams/pictures that come with the questions in this forum? Like this one posted by newbie for ACS 2009 P6 Prelim ...
Thursday, 01 July 2010
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P5 Internal transfer with total unchanged concept
(Forum/ThinkingMath@OnSponge)
... the number of green marbles. After Devi transfers half of the green marbles from Box A to Box B, the number of marbles in Box A becomes 210 and the ratio of the number of the red marbles to green marbles ...
Thursday, 01 July 2010
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Re:P5 Internal transfer with total unchanged concept
(Forum/ThinkingMath@OnSponge)
... in Box A becomes 210 and the ratio of the number of the red marbles to green marbles in Box B becomes 5:6. a) How many green marbles have been transferred from Box A to Box B? b) What is the number of ...
Wednesday, 30 June 2010
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P5 Internal transfer with total unchanged concept
(Forum/ThinkingMath@OnSponge)
... the ratio 3:4. In Box B, the number of red marbles is twice that of the number of green marbles. After Devi transfers half of the green marbles from Box A to Box B, the number of marbles in Box A becomes ...
Tuesday, 29 June 2010
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P5 Internal transfer with total unchanged concept
(Forum/ThinkingMath@OnSponge)
... Devi transfers half of the green marbles from Box A to Box B, the number of marbles in Box A becomes 210 and the ratio of the number of the red marbles to green marbles in Box B becomes 5:6. a) How many ...
Tuesday, 29 June 2010
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Re:P6 Percentage
(Forum/ThinkingMath@OnSponge)
Since when I have posted this question? How come different people can use the same nickname? ...
Friday, 25 June 2010
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Re:P3 Maths - Money
(Forum/ThinkingMath@OnSponge)
Charmine has $24 more than Isaac. Ann has $13.40 less than Charmine. If they have a total of $139.60, how much does Ann have? Hi Mendel, Welcome to onSponge For questions that say "More Than" ...
Thursday, 24 June 2010
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Constant difference
(Forum/ThinkingMath@OnSponge)
cristina wrote: The ratio of Jeremy's age is to his aunt's age is 1:4.In 25 years' time,the ratio will become 2:3.How old is Jeremy now? Present J : A 1 : 4 Difference = 3 units 25 years later J ...
Tuesday, 22 June 2010
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construct:constant difference
(Forum/ThinkingMath@OnSponge)
can someone help me with this question????? The ratio of Jeremy's age is to his aunt's age is 1:4.In 25 years' time,the ratio will become 2:3.How old is Jeremy now? Thx :unsure ...
Tuesday, 22 June 2010
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Pse help...
(Forum/ThinkingMath@OnSponge)
... Ong Kian Ann wrote: 2)7/12 of the members of a choir were girls and the rest were boys. After 12 girls left the choir, the choir become 1/2 of the total. How many children were at the choir at first? Before B ...
Saturday, 19 June 2010
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Re:Pse help...
(Forum/ThinkingMath@OnSponge)
... boys. After 12 girls left the choir, the girls became 1/2 of the total. How many children were at the choir at first? There is a problem with this question as well. I have changed the "the choir become ...
Saturday, 19 June 2010
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External Unchanged Concept
(Forum/ThinkingMath@OnSponge)
... were boys. After 12 girls left the choir, the choir become 1/2 of the total. How many children were at the choir at first? Thank you. ...
Saturday, 19 June 2010
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Re:P6 Maths
(Forum/ThinkingMath@OnSponge)
You'll notice the solutions will come down to 14units and thus are pretty much the same. Shirley your solution looks like it's only part of the solution ??? But I do not immediately see where the 32 ...
Saturday, 19 June 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
... pls wait for others to come up with alternative methods. :( Pepsi wrote: (1) A bus left Town A and travelled towards Town B at a uniform speed. At noon, when the bus was 50km from Town A, a car started ...
Thursday, 17 June 2010
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Re:speed
(Forum/ThinkingMath@OnSponge)
... the situation. For this particular question, using models is actually quite easy however it may not "hit you" immediately that you can do that. By drawing out the picture, it becomes more apparent. ...
Thursday, 17 June 2010