Q&A - P3 Math

[wahwah]

Hi all,

Need help with the following number pattern.

14, 14, 28, ,_, 336, 1680

Many thanks in advance.

[BigDevil]

Confirm there are 2 blank spaces?

[numeric]

If it's only 1 blank, then use multiplication.

http://i48.tinypic.com/35334lv.jpg\">

[wahwah]

That’s my question too, I also feel it should be one blank but there are 2 blanks.

[angel]

I’ve a question and seek your kind advice.


2 ducks and 2 chickens cost $24.
A duck costs twice as much as a chicken.
How much does a duck cost?

Thank you very much.

[mother777]

start to draw a model first.

1 unit = cost of 1 chicken,
2 units = cost of 1 duck (as duck's cost is twice of chicken)

total chicken = 2 units
total duck = 4 unts

6 units -->$24
1 unit = $ 4

duck --> 2 units
= 2 x $4

A duck will cost $8.

Hope this explanation helps

[mother777]

sorry no time to draw model..but really interesting question..will see if my DD1 can solve this tonight

[angel]

mother777:

start to draw a model first.

1 unit = cost of 1 chicken,
2 units = cost of 1 duck (as duck's cost is twice of chicken)

total chicken = 2 units
total duck = 4 unts

6 units -->$24
1 unit = $ 4

duck --> 2 units
= 2 x $4

A duck will cost $8.

Hope this explanation helps

Understood your explanation.
Thank you very much.
I was in doubt coz I do not agree with the model answer given.

[Steadyberry]

Hi


8 similar packets of sweets were shared equally among 37 pupils. When another similar packet of sweet was given out, each pupil received 7 more sweets. How many sweets were given out altogether? The answer given is 2331. Can someone pls explain, show workings and/or draw models on how to get 2331. Thanks in advance.

[mother777]

Ok here goes simple working, don’t know how to upload drawing


Total pupils–> 37
One extra packet shared–> 7 sweets for each pupil
Total sweets in 1 packet–> 37 x 7 = 259

Total packets –> 8+ 1 =9
Total sweets –> 9 x 259 = 2331