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ThinkingMath@OnSponge
(Forum)
A constant mind-boggling matter especially over the renowned primary math problem sums. Join the many who struggle to keep up and others who offer help you wished you have had found out long before. ...
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Re: P5 Maths
(Forum/ThinkingMath@OnSponge)
... and logic you have applied. So whether you use Models, Algebra, +hinkingMath strategies, some funny funny solution from nowhereland or making a list it doesn't really matter as long as it is logical. ...
Friday, 03 September 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
... I believe the question should say something like once the two trains met, it took another 15 min to completely exit the tunnel. How long is the tunnel. Thank you Chris, I checked the question again ...
Tuesday, 24 August 2010
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Re:P6 Maths
(Forum/ThinkingMath@OnSponge)
... should say something like once the two trains met, it took another 15 min to completely exit the tunnel. How long is the tunnel. Thank you Chris, I checked the question again and is written exactly ...
Tuesday, 24 August 2010
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Re: P6 Maths: Speed
(Forum/ThinkingMath@OnSponge)
Chris Rogers wrote: [quote]At 9am, Peter set off from Town A to Town B. At the same time, Tom drove along the same road from Town B to Town A. Peter travelled at a speed of 84km/h and Tom travelled at ...
Tuesday, 24 August 2010
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Re:P5 Number x Value
(Forum/ThinkingMath@OnSponge)
It's the same, except that there is no table. I use a table as I find it easier to explain and easier to read / organisation the information. As long as he understands what he has done to get the correct ...
Tuesday, 24 August 2010
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Re: P6 Maths: Speed
(Forum/ThinkingMath@OnSponge)
At 9am, Peter set off from Town A to Town B. At the same time, Tom drove along the same road from Town B to Town A. Peter travelled at a speed of 84km/h and Tom travelled at a speed of 78km/h throughout ...
Tuesday, 24 August 2010
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P6 Maths: Speed
(Forum/ThinkingMath@OnSponge)
At 9am, Peter set off from Town A to Town B. At the same time, Tom drove along the same road from Town B to Town A. Peter travelled at a speed of 84km/h and Tom travelled at a speed of 78km/h throughout ...
Tuesday, 24 August 2010
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Re:P6 Maths
(Forum/ThinkingMath@OnSponge)
... say something like once the two trains met, it took another 15 min to completely exit the tunnel. How long is the tunnel. A and B are 2 different whole numbers, and A is less than B. Given that A + ...
Sunday, 22 August 2010
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P6 Speed & Number x Value
(Forum/ThinkingMath@OnSponge)
... $325. In the end, Lily had 2 1/2 times as much money as Kumar. a) How much money did Kumar have at first? b) How much money did Lily have in the end? 2) At 9.30 am, Train A which was 200m long, pulled ...
Saturday, 21 August 2010
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Re:P3-Time
(Forum/ThinkingMath@OnSponge)
Yes I understand your explanation. You can change the wording around as long as you keep the same relationship between the two parties the same. However, do note that this may not always make it easier ...
Saturday, 21 August 2010
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P3-Time Model Drawing
(Forum/ThinkingMath@OnSponge)
Andy, Peter and Mark took part in a race. The race started at 7.10pm. Andy took thrice as long as Peter to finish the race and Mark ws 42min faster than Andy. If the total time taken by Mark and ...
Thursday, 19 August 2010
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Re: P5 Challenge Problem
(Forum/ThinkingMath@OnSponge)
... 6 minutes to fill the tank. Tap B takes 3 minutes to fill the tank. If the two taps are turned on at the same time, how long would they take to fill the tank? (18/(6+3)=2 mins) Ans: 2mins. ...
Wednesday, 18 August 2010
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P5 Rate
(Forum/ThinkingMath@OnSponge)
... long would they take to fill the tank? Thank you :) ...
Wednesday, 18 August 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
... up 17 steps and walked up the rest of the steps, and took a total of 53 seconds. How long will Tyson take to walk up both flights of steps? Leave your answer in seconds. Difference in running steps = ...
Monday, 16 August 2010
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P6 Rate
(Forum/ThinkingMath@OnSponge)
... he ran up 17 steps and walked up the rest of the steps, and took a total of 53 seconds. How long will Tyson take to walk up both flights of steps? Leave your answer in seconds. ...
Saturday, 14 August 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
... long did lee take to paint the house all by himself? Your 2nd question is similar to this one from SCGS P6 Prelim 2009 Q17 except that the names have been changed. Pls refer to the solution by Observ ...
Friday, 13 August 2010
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5 marks p6 problem sums
(Forum/ThinkingMath@OnSponge)
... 8 days, teo would take 1 more day to complete the remaining work. how long did lee take to paint the house all by himself? ...
Friday, 13 August 2010
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Re: help!
(Forum/ThinkingMath@OnSponge)
walking time. he walked up the 2 flights of steps so he ran 15 steps lesser, therefore he will take longer time(75s more). Hope this helps ^^ ...
Thursday, 12 August 2010
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Re: help!
(Forum/ThinkingMath@OnSponge)
11-4=7steps 75-40=35s running 7 steps lesser will take 35s longer 1step=5s 15steps=15x5=75s longer total time= 75+40+75=190s ...
Thursday, 12 August 2010
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help!
(Forum/ThinkingMath@OnSponge)
... steps and ran 11 steps, and took a total of 40 seconds. How long will Albus take if he had walked up both flights of steps? ...
Thursday, 12 August 2010
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p6 maths
(Forum/ThinkingMath@OnSponge)
1.A and B took together 5 days to paint their house.if A and B work together for 2 days followed by A working alone for 8 days B will take 1 more day to complete the remaining work.how long will A take ...
Thursday, 12 August 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
Jeslyn Lam wrote: I need help in my school work! This is so difficult!!!!!!!! :( Question : Mike was driving along a highway at a constant speed of 80km/h. He saw a motorcycle 400m behind him. The ...
Tuesday, 10 August 2010
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P6 5 Marks Speed Question
(Forum/ThinkingMath@OnSponge)
I need help in my school work! This is so difficult!!!!!!!! :( Question : Mike was driving along a highway at a constant speed of 80km/h. He saw a motorcycle 400m behind him. The motorcycle was travelling ...
Monday, 09 August 2010
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Re:fractions
(Forum/ThinkingMath@OnSponge)
tks all! I think i understand now. cheers
Friday, 06 August 2010
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Re:fractions
(Forum/ThinkingMath@OnSponge)
Hi Long Suffering I hope this can help you. money at first 5u after spending 1u on sofa set left 4u after spending $800 on washing machine remaining money is 8p 4u --- $800 + 8p 1u --- $200 ...
Friday, 06 August 2010
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Re:p6 maths
(Forum/ThinkingMath@OnSponge)
... seconds less. How long will she take to run up all the 30 steps if she maintains the same speed? 5r + 25w = 99 (x3) --> 15r + 75w = 297sec 15r + 15w = 81sec 60w = 216sec 1w = 3.6sec 1r = 1.8sec 30r ...
Friday, 06 August 2010
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Re:fractions
(Forum/ThinkingMath@OnSponge)
yes, but how do you arrive at $4000?
Thursday, 05 August 2010
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Re:number pattern
(Forum/ThinkingMath@OnSponge)
why do u square the number?
Thursday, 05 August 2010
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Re:fractions
(Forum/ThinkingMath@OnSponge)
Hi Saraswati Can you please explain how you get 10 units?
Thursday, 05 August 2010
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fractions
(Forum/ThinkingMath@OnSponge)
Harry went shopping at a departmental store. He spent 1/5 of his money on a sofa set and another $800 on a washing machine,Later, he spent 1/8 of his remaining amount on a dining table. If the amount of ...
Thursday, 05 August 2010
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number pattern
(Forum/ThinkingMath@OnSponge)
amy was hving a party. The first time the doorbell rang, a guest entered. on each successive ring, the group that entered had 2 more persons than the group that entered on the previous ring. After the ...
Thursday, 05 August 2010
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RATIO
(Forum/ThinkingMath@OnSponge)
The ratio of guppies to goldfish that Sally had was 8:3. The selling price of one guppy was $2 and the selling price of one goldfish was $3. Sally sold 25% of the guppies and the total amount of the remaining ...
Thursday, 05 August 2010
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P6 External Unchanged / Gap & Difference with Rate
(Forum/ThinkingMath@OnSponge)
... 15 steps ,she will take 18 seconds less.how long will she take to run up all the 30 steps.if she maintains the same speed. ...
Wednesday, 04 August 2010
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Re:P5 Maths - Percentage
(Forum/ThinkingMath@OnSponge)
Thank you Chris. I have the same reasoning as shown and explained by you. But somehow I just couldn't arrive at a whole number answer and I knew I made a mistake somewhere along the line. My assumption ...
Tuesday, 03 August 2010
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P6 Maths
(Forum/ThinkingMath@OnSponge)
Felicia wrote: Ning & Zong jogged to & fro repeatedly along a straight path in a park between two points A & B. Ning jogged at a uniform speed of 4m/s and Zong jogged at a uniform speed of 6m/s. They ...
Monday, 02 August 2010
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P6 Maths - Speed Question
(Forum/ThinkingMath@OnSponge)
Here's another question on Speed. Ning & Zong jogged to & fro repeatedly along a straight path in a park between two points A & B. Ning jogged at a uniform speed of 4m/s and Zong jogged at a uniform ...
Sunday, 01 August 2010
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Re:Constant Difference & Remainder
(Forum/ThinkingMath@OnSponge)
The toal length of two pieces of rope was 34m. Their difference in length was 8m. After cutting a fixed length of rope from each piece, the length of the shorter piece was 8/13 of that of the longer piece. ...
Thursday, 29 July 2010
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P5 Constant Difference & Remainder
(Forum/ThinkingMath@OnSponge)
Q1 . The toal length of two pieces of rope was 34m. Their difference in length was 8m. After cutting a fixed length of rope from each piece, the length of the shorter piece was 8/13 of that of the longer ...
Thursday, 29 July 2010
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P6 Shaping Maths -- Semestral Review 1 Q36
(Forum/ThinkingMath@OnSponge)
The library and the bank were 16 km apart. At 11.30am, Ali left the library and cycled towards the bank at 11 km/h. At the same time, David left the bank and cycled towards the library at 13 km/h along ...
Thursday, 29 July 2010
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PSLE Paper 2 Format
(Forum/ThinkingMath@OnSponge)
The new PSLE Paper 2 format no longer use a 3,4,5 mark question. I'm not very sure about this and need some clarification. Is this really true? ...
Thursday, 29 July 2010
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Re: P5 Maths Question
(Forum/ThinkingMath@OnSponge)
... two corners to be 'empty' and move the circles along. ...
Tuesday, 27 July 2010
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P6 maths
(Forum/ThinkingMath@OnSponge)
muthu wrote: 2.some workers arranged chairs in 14 short rows and 12 long rows.each long row had 18 chairs then each short row.60% of the chairs were arranged in long row while the rest of them were arranged ...
Monday, 26 July 2010
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p6 maths
(Forum/ThinkingMath@OnSponge)
... A to Box B so that 25% of the items in box A and 50 % of the items in Box B are pencils? 2.some workers arranged chairs in 14 short rows and 12 long rows.each long row had 18 chairs then each short ...
Monday, 26 July 2010
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Re:P5Math
(Forum/ThinkingMath@OnSponge)
... a really long decimal because you end up with 1unit being 8 8/23 as in the picture below. I have changed the question in the second picture with an appropriate scenario. Solution to the question with ...
Thursday, 22 July 2010
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Re: P3 length
(Forum/ThinkingMath@OnSponge)
... equal "intervals". Then we can find out have many intervals are required for Abdullah to catch up and ultimately, how long / far it takes. At the start Tharman is 6m ahead - For each interval Abdullah ...
Thursday, 22 July 2010
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Re:P6 5 marks Speed Question
(Forum/ThinkingMath@OnSponge)
A goods train 200m long has to travel through a tunnel which is 300m long. The train is moving at 60km/h. For how many seconds is the whole train in the tunnel? Did you try drawing out a picture for ...
Monday, 12 July 2010
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Re:Need Help On This!!!
(Forum/ThinkingMath@OnSponge)
Machine A can do a printing job in 2 hours. Machine B can do the same job in 3 hours. If both machines are used at the same time, how long would it take to complete half the job?? Hi Karthik If I ...
Monday, 12 July 2010
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P6 5 marks Speed Question
(Forum/ThinkingMath@OnSponge)
I'm worst in speed questions.... So pls help! :( Question : A goods train 200m long has to travel through a tunnel which is 300m long. The train is moving at 60km/h. For how many seconds is the whole ...
Monday, 12 July 2010
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Rate with two objects
(Forum/ThinkingMath@OnSponge)
Machine A can do a printing job in 2 hours. Machine B can do the same job in 3 hours. If both machines are used at the same time, how long would it take to complete half the job??? :woohoo: ...
Sunday, 11 July 2010