Q&A - P3 Math

[dazzlego]

Applelyn1:

The total length of 3 pcs of ribbon A, B and 210cm. B is 50cm longer than C but 20cm shorter than A. What is the length of ribbon A?


Pls help, thank you.

Hi Applelyn1,
Have u tried to draw the model?

http://i50.tinypic.com/2h6hvrp.jpg\">

[Applelyn1]

dazzlego:

Applelyn1:

The total length of 3 pcs of ribbon A, B and 210cm. B is 50cm longer than C but 20cm shorter than A. What is the length of ribbon A?


Pls help, thank you.

Hi Applelyn1,
Have u tried to draw the model?

http://i50.tinypic.com/2h6hvrp.jpg\">

Hi dazzlego

I did and the answer is 100? the answer sheet stated as 80.

Thanks.

[BigDevil]

100cm should be correct.


Check: 100 (A) + 80 (B) + 30 = 210

[dazzlego]

Applelyn1:

dazzlego:

[quote=\"Applelyn1\"]The total length of 3 pcs of ribbon A, B and 210cm. B is 50cm longer than C but 20cm shorter than A. What is the length of ribbon A?


Pls help, thank you.

Hi Applelyn1,
Have u tried to draw the model?

http://i50.tinypic.com/2h6hvrp.jpg\">

Hi dazzlego

I did and the answer is 100? the answer sheet stated as 80.

Thanks.[/quote]Hi Applelyn1,

Yes the answer is 100
210 - 20 + 50 = 240
240 ÷ 3 = 80 (B)
80 + 20 = 100 (A)

Answer sheet might be wrong sometimes

[Applelyn1]

Hi Applelyn1,

Have u tried to draw the model?

http://i50.tinypic.com/2h6hvrp.jpg\">[/quote]

Hi dazzlego

I did and the answer is 100? the answer sheet stated as 80.


Thanks.[/quote]

Hi Applelyn1,

Yes the answer is 100
210 - 20 + 50 = 240
240 ÷ 3 = 80 (B)
80 + 20 = 100 (A)

Answer sheet might be wrong sometimes :D[/quote]

Hi dazzlego

:thankyou:

[HAPPYH]

While drawing parallel lines, does it need to be accurate? When my DD drew the parallel lines (grids were given), it looked slightly slanted but the points she started and ended were correct. Anyone experienced/came across this issue? Is it acceptable for P3? Thank you in advance.

[dazzlego]

HAPPYH:

While drawing parallel lines, does it need to be accurate? When my DD drew the parallel lines (grids were given), it looked slightly slanted but the points she started and ended were correct. Anyone experienced/came across this issue? Is it acceptable for P3? Thank you in advance.

Hi,
The correct way is to draw it accurately parallel.
But still it depends on (the mood of) the teacher who mark. Some teacher are considerate and will let go the small matters
Just assume that your DD is lucky this time :evil: and do the correct one next time

[HAPPYH]

dazzlego:

HAPPYH:

While drawing parallel lines, does it need to be accurate? When my DD drew the parallel lines (grids were given), it looked slightly slanted but the points she started and ended were correct. Anyone experienced/came across this issue? Is it acceptable for P3? Thank you in advance.

Hi,
The correct way is to draw it accurately parallel.
But still it depends on (the mood of) the teacher who mark. Some teacher are considerate and will let go the small matters
Just assume that your DD is lucky this time :evil: and do the correct one next time

Thank you

[tracywham]

Hi, can i get someone to englighten me in solving this question as in model drawings? Thanks.


Book store A has 40 fewer magazines than book store B. If 130
magazines are transferred from book store B to book store A, there will
be twice as many magazines in book store A as in book store B. How many magazines are there altogether?

[qms]

tracywham:

Hi, can i get someone to englighten me in solving this question as in model drawings? Thanks.


Book store A has 40 fewer magazines than book store B. If 130
magazines are transferred from book store B to book store A, there will
be twice as many magazines in book store A as in book store B. How many magazines are there altogether?