Q&A - P4 Math

[sunshine0809]

http://i49.tinypic.com/5k3nyh.jpg\">

Ans 146

[Sharmum]

Hi,


May i know if theres a shorter method?

:?

http://i50.tinypic.com/dfehhg.jpg\">

[small]

small:

24hr-mum:

for qn such as: if the teacher shares her sweets wf 5 pupils she wil hv 3 sweets left, if she share wf 6 pupils she wil b short of 7 sweets, how many sweet she has?any shortcut besides listg the multiples of 5 n 6? the clue gvn is she has more than 40 sweets

Hi 24hr-mum,

HTH...

As the number of sweets in both cases is the same thus the answer is 53 sweets.

Case 1: 5 students with extra of 3 sweets
Case 2: 6 students with short of 7 sweets

24hr-mum:

my gal math teacher say conceptuallu wrong to say 1 student has 10 sweets

5 students + 3 sweets = 6 students - 7 sweets
1 student = 10 sweets

From case 1 ------(5x10 )+3 = 53 sweets

Hi 24hr-mum,

Pictorial diagram will be easier to understand.

http://i50.tinypic.com/9an6v6.jpg\">

[small]

Sharmum:

Hi,


May i know if theres a shorter method?

:?

http://i50.tinypic.com/dfehhg.jpg\">

Hi Sharmum,

Please refer to attached pic, HTH.

http://i48.tinypic.com/2llecjs.jpg\">

[Jamesbond]

A set of two blouses costs $41. Ivy found out that she could only buy 4 blouses but not more than 6 blouses with the amount of money she had. What is the possible amount of money she had?

1) $50 2) $90
3) $150 4) $250

Answer is option 2.

Pl explain me this in detailllll....VVVVV urgent......I donno..... :yikes:

[Champion]

Jamesbond:

A set of two blouses costs $41. Ivy found out that she could only buy 4 blouses but not more than 6 blouses with the amount of money she had. What is the possible amount of money she had?

1) $50 2) $90
3) $150 4) $250

Answer is option 2.

Pl explain me this in detailllll....VVVVV urgent......I donno..... :yikes:

P4 dd1 answer: 2 blouses $41 then 4 blouses will be $41 x 2 = $84. Therefore $84 nearest is $90; Answer (2).

[Jamesbond]

thanks a lot

[Jamesbond]

Janice age is a multiple of 7. Next year, her age will be a multiple of 4. If janice is less than 40 years old, how old is she now?


Pl help me do this.....donno.... :yikes:

[Jamesbond]

Shanthi is reading her favourite book. She realizes the product of the two page numbers facing each other is 420. what are the page numbers that she is reading now?


pl help and explain in detail.....Thanks in advance. :yikes:

[Champion]

Jamesbond:

Shanthi is reading her favourite book. She realizes the product of the two page numbers facing each other is 420. what are the page numbers that she is reading now?


pl help and explain in detail.....Thanks in advance. :yikes:

Guess & Check Method
Page 20 & 21 - 20 x 21 = 420