Q&A - P4 Math

[elisammom]

Hi


Pls help

Ali spent $20 on a plate, a bowl and 2 cups. Each plate costs $3 more than a cup but $ 2 less than a bowl. Find the cost of 14 cups.

Tia

[babies]

Hi,


Anyone? pls help…

Bob is 7 years older than Ali.
In 4 years time, Bob will be twice as old as Ali.
How old is Ali now?

Thanks!

[tianzhu]

elisammom:

Hi


Pls help

Ali spent $20 on a plate, a bowl and 2 cups. Each plate costs $3 more than a cup but $ 2 less than a bowl. Find the cost of 14 cups.

Tia

Hi

For P4, a neat way is to use MD.

Cup ----- I unit or 1 box
Plate ----- 1 unit + 3
Bowl ----- 1 unit + 3 + 2

2 units + (1 unit +3) + (1 unit + 5) ------ 20

4 units ------ 12
1 unit ------ 3

Cost of 14 cups ------ 14*3 ------ 42

Best wishes

[tianzhu]

babies:

Hi,


Anyone? pls help...

Bob is 7 years older than Ali.
In 4 years time, Bob will be twice as old as Ali.
How old is Ali now?

Thanks!

Hi

In 4 years time, Bob will be twice as old as Ali.

2 units ------ 14
1 unit ----- 7

In 4 years time, Ali will be 7 year old.

Hence now he is 3 year old (7-4).

Best wishes

[babies]

tianzhu:

babies:

Hi,


Anyone? pls help...

Bob is 7 years older than Ali.
In 4 years time, Bob will be twice as old as Ali.
How old is Ali now?

Thanks!

Hi

In 4 years time, Bob will be twice as old as Ali.

2 units ------ 14
1 unit ----- 7

In 4 years time, Ali will be 7 year old.

Hence now he is 3 year old (7-4).

Best wishes

:thankyou: tianzhu :rahrah: :rahrah:

[elisammom]

Thanks tianhu


May I knw how to draw the model?
Thanks

[tianzhu]

elisammom:

Thanks tianhu


May I knw how to draw the model?
Thanks

Hi

Good Morning.

Hope this helps.

Best wishes.

http://farm8.staticflickr.com/7046/6878084451_d4cbc73d61_z.jpg\">

[elisammom]

Thanks tianhu

This helps a lot in explaining to my kid;)

[chloecube]

Need help on this:

John had 4 times as many marbles as Brandon. After John gave 28 marbles away, Brandon had twice as many marbles as John. How many more marbles did John have than Brandon.
Thks

[smartmummy]

chloecube:

Need help on this:

John had 4 times as many marbles as Brandon. After John gave 28 marbles away, Brandon had twice as many marbles as John. How many more marbles did John have than Brandon.
Thks

At first
John [][][][]
Brad []
After John gave 28 away
John [][][][]
From the 1/2 of first box u have to highlight that equal to 28
Brad []


3u+1/2u=28 ... u=8
I am not sure how to teach P4 this solving with fraction
3u=24
24 more marbles John had than Bradon at first.
Do u need model?