Q&A - P3 Math

[Daddy]

HI,


Any model? Not so understand…

[CeciliaHua]

Daddy:

HI,


Any model? Not so understand...

I'm not sure if this is correct.

Five boxes represent the 5 vases
[][][][][]

since you need additional $42 to buy all 5 vases, the next model is 3 boxes and the other 2 boxes should be $12+$42. Why $12? Because when you buy 3 vases, you have $12 left.

[][][]$12+$42

Hope this helps.

[Daddy]

Hi,


I have another question to ask.
\"30 children attended a party. Each girl ate 3 chickens wings and each boy ate 4 chicken wings. The boys ate 36 more chicken wings than girls. How many boys attended the party?\"

Need help. P4 math so difficult !!!! :?

Thanksss alot

[Daddy]

Thanks CeciliaHua & radiantmum.


I got it…

[CeciliaHua]

Daddy:

Hi,


I have another question to ask.
\"30 children attended a party. Each girl ate 3 chickens wings and each boy ate 4 chicken wings. The boys ate 36 more chicken wings than girls. How many boys attended the party?\"

Need help. P4 math so difficult !!!! :?

Thanksss alot

I think there's something not correct in the question. Since each boy ate 1 more chicken wing than girl, there will be 36 boys based on the sentence \"The boys ate 36 more chicken wings than girls.\". But the total number of children is only 30. Doesn't make sense.

[Daddy]

Hi CeciliaHua,


The question is correct. I have checked already.

[jedamum]

CeciliaHua:

I think there's something not correct in the question. Since each boy ate 1 more chicken wing than girl, there will be 36 boys based on the sentence \"The boys ate 36 more chicken wings than girls.\". But the total number of children is only 30. Doesn't make sense.

CeciliaHua,
that is what i thought too when i first read the questions. but the above in bold can only happen when there are equal no. of boys and girls. it should make sense if say there are 1 girl who ate 3 wings and 2 boys ate 8 wings, there is an extra 5 wings already.
but not sure how to work this sum though...as well as a lot of other questions posted here!

[Daddy]

The answer is 18 boys. My daughter did not write down the correction completely. So that i also do not understand. I need someone for help…Thanks.

[tutor_your_child]

Daddy:

Hi,

\"30 children attended a party. Each girl ate 3 chickens wings and each boy ate 4 chicken wings. The boys ate 36 more chicken wings than girls. How many boys attended the party?\"

http://www.postimage.org/

[CeciliaHua]

Daddy:

The answer is 18 boys. My daughter did not write down the correction completely. So that i also do not understand. I need someone for help...Thanks.

With your answer, it makes sense.

Since each girl ate 3 wings and each boy ate 4 wings, to make the number equal, 4 girls equal to 3 boys equal to 12 wings

[g][g][g][g]=[b][b][b]

Boys ate 36 more means there are 9 more boys.

[b][b][b]
[b][b][b]
[b][b][b]

With these 9 boys, there are 21 children left. To balance the rest, note that 4 girls = 3 boys = 7 children altogether. That means 21 divide by 7 = 3.

That means
[g][g][g][g] and [b][b][b]
[g][g][g][g] and [b][b][b]
[g][g][g][g] and [b][b][b]

This means that there are 12 girls and 9 boys in the 21 children. Therefore, there are 9 + 9 = 18 boys.

Hope my working is correct.