Q&A - P3 Math

[usaik]

Hi,

The following question is from one of the top school past year paper for P4. I need help on the way how working can be worked out for the question. Many thanks in advance please.

The answer provided is \"C\"

http://postimage.org/image/1p1t773s4/

[tianzhu]

usaik:

Hi,

The following question is from one of the top school past year paper for P4. I need help on the way how working can be worked out for the question. Many thanks in advance please.

The answer provided is \"C\"

http://postimage.org/image/1p1t773s4/

Hi usaik

Good Morning.

Look at the pattern; the multiples of 3(even) like 6, 12, 18 appear in Row A.

The multiples of 3 (odd) like 3, 6, 9 ….. appear in Row C.

The nearest multiple of 3 to the number 100 is 99. It is odd,therefore,should be in Row C.

The number 100 appears to the right of 99 which is in Row C.

Hence , the given answer is correct.

Best wishes

[plum-cake]

KSP:

P3 Maths question.


x + y = 500
x - y = 300

Find x and y.

How to explain the whole process of solving this to a P3? Thanks.

Can't we do like this
x + Y = 500 --------statement 1
x - y = 300 --------Statement 2

then statement 1 - statement 2
that is
(x - x) (y - -y) = (500 -300)

so x will get cut off and y will become 2ys ( minus minus will be plus) = 200
that is 2y = 200
y = 100

now according to statement1
x + 100 = 500
x = 500- 100
= 400

same Question came in the P2 paper but for the x,y they put star and moon pictures. with the help of another mommy I tried to explain with the bar. but my daughter couldn't understand but with the above method she got something...

my question is Is it wrong?

[usaik]

tianzhu:

usaik:

Hi,

The following question is from one of the top school past year paper for P4. I need help on the way how working can be worked out for the question. Many thanks in advance please.

The answer provided is \"C\"

http://postimage.org/image/1p1t773s4/

Hi usaik

Good Morning.

Look at the pattern; the multiples of 3(even) like 6, 12, 18 appear in Row A.

The multiples of 3 (odd) like 3, 6, 9 ….. appear in Row C.

The nearest multiple of 3 to the number 100 is 99. It is odd,therefore,should be in Row C.

The number 100 appears to the right of 99 which is in Row C.

Hence , the given answer is correct.

Best wishes

Hi Tianzhu,
Thank you so much! Hope you have a good evening...

[concerned1970]

Can someone pls help to solve this ques? TIA

(I dunno how to use "Chicken and Rabbit method" on this pb sum.) I guessed the ans is 120 adults.

Adult: $5 Children: $2

There were twice as many children as adults at the concert. The total amt of money collected was $1080. How many adults were there at the concert?

[small]

concerned1970:

Can someone pls help to solve this ques? TIA

(I dunno how to use \"Chicken and Rabbit method\" on this pb sum.) I guessed the ans is 120 adults.

Adult: $5 Children: $2

There were twice as many children as adults at the concert. The total amt of money collected was $1080. How many adults were there at the concert?

Hi concerned1970,

Hope this helps and my solution may be the ideal one..


Given:
Children: $2 Adult: $5
The ratio of children to adults is 2 : 1
The price for 2 children and 1 adult is $9 (1 group)

Total amount of money collected / 9 ----> 1080 / 9 = 120 groups

This means there are 240 children and 120 adults.

Ans : There were 120 adults at the concert.


Check back : 240 x 2 + 120 x 5 ---> 480 + 600 = 1080

[Muffins]

concerned1970:

Can someone pls help to solve this ques? TIA

(I dunno how to use \"Chicken and Rabbit method\" on this pb sum.) I guessed the ans is 120 adults.

Adult: $5 Children: $2

There were twice as many children as adults at the concert. The total amt of money collected was $1080. How many adults were there at the concert?

1 unit for adults: 5x
\" \" \" children: 2x

2x X 2 = 4x
4x + 5x = 9x
1080/9 = 120

[ttyh]

Hi

Sorry to bother you all with a simple problem. My xx brain not functioning too well today

Benny’s saving was 7 tomes as much as Muthu’s savings.
After spending $20, Benny had $25 more than Muthu. How much was Benny’s savings at first?

[tianzhu]

ttyh:

Hi

Sorry to bother you all with a simple problem. My xx brain not functioning too well today

Benny's saving was 7 tomes as much as Muthu's savings.
After spending $20, Benny had $25 more than Muthu. How much was Benny's savings at first?

Hi ttyh

It is suggested that you draw a MD.

Benny ----- 7 units
Muthu ------ 1 unit

6 units -------20+25 -----45
1 unit ------7.5

Benny -------52.50

Best wishes

[Blur Baby]

Hello Uncles and Aunties, can you please help me with this question? Thank you.



Siti and Mohan started counting at the same time. Siti counted on by hundreds from 2000. Mohan counted backwards by thousands. After 4 counts, they had reached the same number. What number did Mohan start counting from?