Q&A - PSLE Math

[moonee]

tianzhu:

moonee:

:?: Hi can anyone help with this P5 question?


A frog took 5 leaps forward and 6 leaps back. Next it took 7 leaps forward and 8 leaps back. Finally, it took 4 more leaps forward before stopping.

a.Did the frog stop in front of or behind its starting point?
b. How many leaps away was it from its starting point?
c. How many times did it leap over the starting point?
d. How many leaps away was the frog from the starting point when it was furthest away?

Hi moonee

Good Evening.

You may use a heuristics known as Draw a Diagram to have a pictorial representation of the question.

a)The frog stopped in front of or behind its starting point.
b)It was two leaps away from the starting point.
c)3 times
d)6 leaps

If you need the diagram, please let me know. I’ll do it tomorrow.

Best wishes

Hey Thanks alot, would appreciate if u could provide the diagram at your own time.

[tianzhu]

moonee:

Good Evening.
Hey Thanks alot, would appreciate if u could provide the diagram at your own time.

Hi moonee

You're welcome.

For (a), the answer should be \"The frog stopped in front of its starting point\".

I'll do the diagram tomorrow.

Best wishes

[tianzhu]

moonee:

Hey Thanks alot, would appreciate if u could provide the diagram at your own time.

Hi moonee

Good Morning.

You're welcome.

I think kids will enjoy doing this kind of question.

It is quite fun moving the frog forward and backwards. Use different colours to show the different leaps. Once done, the answers are staring at you.

Have fun with your kid.

Best wishes

http://farm6.static.flickr.com/5171/5472617371_0beb398783_b.jpg\">

[Dharma]

Puffer:

Can anyone help?


In planning for a party, Mrs Lim bought enough satay to allow her guests an average of 25 sticks each. If 2 more people joined the party, how many fewer sticks of satay will each of her guests be given?

Thanks in advance.

http://postimage.org/image/20tde6wv8/

[anneshirleygilbert]

Many thanks, tianzhu.

[tianzhu]

anneshirleygilbert:

Many thanks, tianzhu.

Hi

you're welcome.

Best wishes

[tianzhu]

youngtay:

Mr Tianzhu


Thanks

Hi

you're welcome.

Best wishes

[Cheerfuldad]

tianzhu:

Cheerfuldad:

Hi all,


Please help!

Q. Tank X and Y are each filled with some water. If water from Tank Y is poured into Tank X until the water in Tank X reaches the brim, there will be 8 litres of water left in Tank Y. If water from Tank X is poured into Tank Y until the water in Tank Y reaches the brim, there will be 26 litres of water left in Tank X. The ratio of the volume of Tank X to the volume of Tank Y is 5:3. How many more litres of water are needed to fill both tanks to their brim?

Hi Cheerfuldad

Good Evening.

There is a similar question on page 238 of this thread. You may wish to refer to it.

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?p=351164

Best wishes

Hi Tianzhu,

Thank you for showing me the link! Very much appreciated.

[is_me_lblue]

Hi,


I need help for the following :

Jan and Kay had equal number of sweets and equal numbers of chocolates. Jan ate 12 sweets and Kay ate 18 chocolates and then the ration of Jan’s sweets to chocolates became1:7 and the ration of Kay’s sweets to chocolates became 1:4. How many sweets did Jan have at first ?

The answer given is 34 sweets.

[tianzhu]

Hi peggy


Good afternoon

In this question, we shall be using a strategy called “Working backwards”.

In layman terms, it’s reversing.How wonderful it would be if we could apply “Working backwards” in our life journey?

Once you become more familiar with this method, you may consolidate the MD without breaking them up.

However, if I may suggest, I would like to “solve part of the problem” by breaking the question into sub problems which are more easily managed.

For this solution, I’ve shown more MD to show the transaction. Once you become more seasoned, you may choose not to draw some of them.

Hope you’ll find it useful.

Best wishes.

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