Q&A - P5 Math

[Charnic]

Thanks. You are my saviour. I spent 20 minutes n still could not figure out the steps from her tuition teaacher. Your explanation is clear enough ! :rahrah:

[elisammom]

Hi All

Pls help TIA!

1) Madeline had 49 paper clips and jacob had 644 paper clips.
After their mother gave them each an equal number of paper clips, Madeline had 1/8 as many paper clips as Jacob.
How many paper clips did their mother give each of them?


2) Benny read 1/3 of a storybook on Mon and 5/6 of the remainder on Tues.
He completed reading the rest of the 48 pages on Wed.
How many pages were there in the book?

Thanks

[Charnic]

For question 1,


7 U ---- 595
U -------85

M is 85-49, mum gives 36

For question 2,

1/3 on MOnday, 5/9 on Wed. Remaining is 1 - 1/3 - 5/9, balance is 1/9 which equals to 48
U ----- 48
Total pages is 48 * 9 = 432 pages altogether

[elisammom]

CNS:

For question 1,


7 U ---- 595
U -------85

M is 85-49, mum gives 36

For question 2,

1/3 on MOnday, 5/9 on Wed. Remaining is 1 - 1/3 - 5/9, balance is 1/9 which equals to 48
U ----- 48
Total pages is 48 * 9 = 432 pages altogether

Hi CNS, Thanks for your promptly reply:)

However I cant get it why 7U is 595 (644-49). Where is the additional amt that mom has given?
Pls help thanks!

[tianzhu]

sokk:

Hi,


Have a question on average that I need help with. Thanks !

Bin has $30 more than Ron.
Wei has 4/3 of the average of what Ron and Bin have.
The average amount that Bin and Wei have is 1.5 of Ron's money.
How much money does Wei have?

Thanks !

Hi

You may work using MD or units.

Ron ----- 6 units

Bin ----- 6 units + 30

Average of Ron and Bin ----- 6 units + 15

Wei has 4/3 of the average of what Ron and Bin have.

Hence, Wei ----- 8 units + 20

Total amount of Bin and Wei ----- 14 units + 50 (6 units + 30 + 8 units + 20)

Average of Bin and Wei ----- 7 units + 25

1.5 of Ron’s money ------ 9 units (1.5*6)

7 units + 25 ----- 9 units

1 unit ----- 12.5

Wei ----- 8*12.5 + 20 ----- 120

Best wishes

[tianzhu]

elisammom:

However I cant get it why 7U is 595 (644-49). Where is the additional amt that mom has given?
Pls help thanks!

Hi

There are two scenarios in this question.

Scenario 1 -----Madeline and Jacob started out with 644 and 49 clips respectively. The difference in the number of clips is 595 (644-49).

Scenario 2 ----- Their mother gave each one of them an equal number of clips. Since an equal number of clips are given to each one of them, the difference in their number of clips stays the same as before.

I’ve drawn more MD than necessary, once students become more familiar, they may consolidate some of the steps.

Hope this helps.

Best wishes

http://farm9.staticflickr.com/8235/8401398564_7d7b82baf0_z.jpg\">

[elisammom]

tianzhu:

elisammom:

However I cant get it why 7U is 595 (644-49). Where is the additional amt that mom has given?
Pls help thanks!

Hi

There are two scenarios in this question.

Scenario 1 -----Madeline and Jacob started out with 644 and 49 clips respectively. The difference in the number of clips is 595 (644-49).

Scenario 2 ----- Their mother gave each one of them an equal number of clips. Since an equal number of clips are given to each one of them, the difference in their number of clips stays the same as before.

I’ve drawn more MD than necessary, once students become more familiar, they may consolidate some of the steps.

Hope this helps.

Best wishes

http://farm9.staticflickr.com/8235/8401398564_7d7b82baf0_z.jpg\">

Thanks tianzhu!
You saved me again!

[dazzlego]

sokk:

Hi,


Have a question on average that I need help with. Thanks !

Bin has $30 more than Ron.
Wei has 4/3 of the average of what Ron and Bin have.
The average amount that Bin and Wei have is 1.5 of Ron's money.
How much money does Wei have?

Thanks !

Hi Sokk,

I use ratio method to solve the question since this is P5 question

Wei : Ron+Bin = 4:6 = 2:3 (total=5)
Bin+Wei : Ron = 6:2 = 3:1 (total=4)
Total must be the same (LCM of 5 and 4 = 20)
W : R+B = 8:12
B+W : R = 15:5

W = 8 units
R = 5 units
B = 7 units

B- R = 2 units = $30
W = 8 units = $120

Hope it helps

CHeers :celebrate:

[elisammom]

Hi All

Pls help, TIA!
Dave could buy either 24 sweets or 18 chocolates with the amount of money he had. He used all his money to buy 8 sweets and some chocolates. How many chocolates did he buy?

[Jamesbond]

elisammom:

Hi All

Pls help, TIA!
Dave could buy either 24 sweets or 18 chocolates with the amount of money he had. He used all his money to buy 8 sweets and some chocolates. How many chocolates did he buy?

24/8=3
18/3=6
6*2=12.
Hope my ds ans is correct.... :nailbite: he has a slight doubt with his answering...