Q&A - P4 Math

[MathIzzzFun]

Bunny27:

Hi, can help with the following question:

farmer has an equal no of cows & sheep. Afer selling 360 sheep, the no of cows was 4 times the no of sheep left. How many cows were there in the farm?

Thanks

Hi

This MD will help..

http://i51.tinypic.com/2cq04nk.jpg\">

cheers.

[Bunny27]

MathIzzzFun:

Bunny27:

Hi, can help with the following question:

farmer has an equal no of cows & sheep. Afer selling 360 sheep, the no of cows was 4 times the no of sheep left. How many cows were there in the farm?

Thanks

Hi

This MD will help..

http://i51.tinypic.com/2cq04nk.jpg\">



Thanks with this model I can explain easily to my niece。

cheers.

[Bunny27]

Sorry, another question need help:

length of pink ribbon is 48m, yellow ribbon is 60m. Mr Ramah wants to buy an equal length of pink & yellow ribbons. He can only buy the ribbons in full rolls. What is the least number of rolls of pink & yellow ribbon he can buy?


Thanks

ChiefKiasu:

Moderator's Note: Please use this

thread to ask for help on specific questions. Please refrain from out of topic chatter in this thread to make it easier for the community to find the answers they need.

[just888]

Bunny27:

Sorry, another question need help:

length of pink ribbon is 48m, yellow ribbon is 60m. Mr Ramah wants to buy an equal length of pink & yellow ribbons. He can only buy the ribbons in full rolls. What is the least number of rolls of pink & yellow ribbon he can buy?


Thanks

Pink ribbon is 48m
Yellow ribbon is 60m

The common divider for the 2 ribbons are 2,4,6,12
Hence the max common length is 48x60 = 2880
Minimum common length = 2880/12 = 240

Hence no of pink rolls = 240/48 = 5
and no of yellow rolls = 240/60 = 4

[Bunny27]

just888:

Bunny27:

Sorry, another question need help:

length of pink ribbon is 48m, yellow ribbon is 60m. Mr Ramah wants to buy an equal length of pink & yellow ribbons. He can only buy the ribbons in full rolls. What is the least number of rolls of pink & yellow ribbon he can buy?


Thanks

Pink ribbon is 48m
Yellow ribbon is 60m

The common divider for the 2 ribbons are 2,4,6,12
Hence the max common length is 48x60 = 2880
Minimum common length = 2880/12 = 240


Thanks for the help...

Hence no of pink rolls = 240/48 = 5
and no of yellow rolls = 240/60 = 4

[usaik]

Hi,

I need help with the following question. What should the correct answer be?

http://i51.tinypic.com/294q7w8.jpg\">

TIA

[just888]

usaik:

Hi,

I need help with the following question. What should the correct answer be?

http://i51.tinypic.com/294q7w8.jpg\">

TIA

My answer is 8. 4 lines cut through the triangles and 4 lines in between the 2 triangles.

[usaik]

Hi just888,


Thank you so much for your kind reply.
Really need more advice from you as I still couldn’t figure it out. As there are 8 triangles, should there be 8 lines lines cutting through the triangles and 8 lines in between every 2 triangles?

TIA

[tianzhu]

usaik:

Hi just888,


Thank you so much for your kind reply.
Really need more advice from you as I still couldn't figure it out. As there are 8 triangles, should there be 8 lines lines cutting through the triangles and 8 lines in between every 2 triangles?

TIA

Hi

Please refer to illustration 2 of this link.

http://www.education.vic.gov.au/studentlearning/teachingresources/maths/mathscontinuum/space/Sp35001aP.htm

It should help you to answer your question.

Best wishes

[just888]

tianzhu:

usaik:

Hi just888,


Thank you so much for your kind reply.
Really need more advice from you as I still couldn't figure it out. As there are 8 triangles, should there be 8 lines lines cutting through the triangles and 8 lines in between every 2 triangles?

TIA

Hi

Please refer to illustration 2 of this link.

http://www.education.vic.gov.au/studentlearning/teachingresources/maths/mathscontinuum/space/Sp35001aP.htm

It should help you to answer your question.

Best wishes

Hi Usaik,

I said 4 coz, the line cutting through 1 of the triangle is the same line as the one cutting through the triangle opposite it. Therefore we do not consider 2 lines, but count as 1 instead. Hence total for the figure is 8.

As u see in the http://www.education.vic.gov.au/studentlearning/teachingresources/maths/mathscontinuum/space/Sp35001aP.htm shared by tianzhu.