Q&A - P4 Math

[Singfrench]

Singfrench:

chloecube:

Ms Ong has a packet of sweet. If she gives 6 sweets to each pupils, she will have 2 sweet left, if she give 7 sweets to each pupils, she will be short of 11. How many sweets are there in the packet? Howamy pupils does ms Ong have?

guess and check...

the columns add2 and takeaway11 must be the same number of sweets...

pupils]\t6 sweets each]\tadd 2 ]\t7 sweets each ] take away 11
10\t ] 60\t ] 62\t ] 70\t ] 59
18\t ] 108\t ] 110\t ] 126\t ] 115
15\t ] 90\t ] 92\t ] 105\t ] 94
13\t ] 78\t ] 80 \t ] 91\t ] 80


Ans: 13 pupils and 80 sweets

hope i'm not wrong with my mental calcs

sorry for the poor format...blur dunno how to do it right here. :oops:

there are basically 5 columns separated by \"]\"

[MathIzzzFun]

chloecube:

Ms Ong has a packet of sweet. If she gives 6 sweets to each pupils, she will have 2 sweet left, if she give 7 sweets to each pupils, she will be short of 11. How many sweets are there in the packet? Howamy pupils does ms Ong have?

Hi

http://i42.tinypic.com/4retdh.jpg\">

http://www.flickr.com/photos/62167097@N02/6967105663/in/photostream

cheers.

[BigDevil]

chloecube:

Ms Ong has a packet of sweet. If she gives 6 sweets to each pupils, she will have 2 sweet left, if she give 7 sweets to each pupils, she will be short of 11. How many sweets are there in the packet? Howamy pupils does ms Ong have?

Ms Ong has 2 extra sweets when handing out 6 sweets to each pupil.

To give out 7 sweets to each pupil, those 2 extra sweets will be given out, and she still needs 11 more.

From that, it can be deduced that number of pupils = 2 + 11 = 13.

So number of sweets = (13 x 6) + 2 = 80

Err....but I don't know how to express the above mathematically. :oops:

[BigDevil]

MathIzzzFun:

http://i44.tinypic.com/2lij13o.jpg\">

:salute:

[cmm]

This is something like Sudoku I think…


9 squares are arranged 3 x 3. Fill in the squares with digits 1 to 9, not repeating, so that when they are added up horizontally, vertically or diagonally, they add up to the same number.

Many thanks!!!

[tianzhu]

cmm:

This is something like Sudoku I think....


9 squares are arranged 3 x 3. Fill in the squares with digits 1 to 9, not repeating, so that when they are added up horizontally, vertically or diagonally, they add up to the same number.

Many thanks!!!

Hi

This is more like a brain teaser, not typical P4 maths questions.

4--9--2
3--5--7
8--1--6

The numbers add up to 15, horizontally, vertically and diagonally.

Best wishes

[cmm]

Thank you, thank you, tianzhu for coming to my rescue again!


This question was given by my girl’s class math teacher to the class. How about the same question, now 5 x 5?

Thanks lots!!!

[tianzhu]

cmm:

Thank you, thank you, tianzhu for coming to my rescue again!


This question was given by my girl's class math teacher to the class. How about the same question, now 5 x 5?

Thanks lots!!!

Hi

1--24--17--15--8
14--7--5--23--16
22--20--13--6--4
10--3--21--19--12
18--11--9--2--25

The numbers add up to 65.

Ok, no more brain teasers, time to watch tv already.

Best wishes

[cmm]

:thankyou:

[chloecube]

Thank you everyone.