Q&A - P3 Math

[peterch]

schellen:

What level is this question for? It seems to me that algebra is a good way to solve it but I think you'd better wait for someone with more experience.

Sorry, it was for primary 4.

[kingboo]

peterch:

schellen:

What level is this question for? It seems to me that algebra is a good way to solve it but I think you'd better wait for someone with more experience.

Sorry, it was for primary 4.

The answer is 12 sheep and 14 chickens. 12x4=48( 4 legs per sheep) and 14x2=28 (2 legs per chicken).

[tianzhu]

Hi


For this P4 question, a student may use Guess and Check to solve it as the figures are quite small.Another way is making a supposition or assuming method which is more efficient for questions involving bigger numbers.

Hope this helps.

http://farm3.static.flickr.com/2510/3866423107_c6a0729996_o.jpg\">

[acforfamily]

peterch:

Q: Ramu saw 26 sheep and chickens in a farm. He counted a total of 76 legs. How many sheep were there?

I agree with Tianzhu's assumption method i.e. assume all are chicken first ( alternatively sheep first). This is the method recommended for that level.

[peterch]

acforfamily:

peterch:

Q: Ramu saw 26 sheep and chickens in a farm. He counted a total of 76 legs. How many sheep were there?

I agree with Tianzhu's assumption method i.e. assume all are chicken first ( alternatively sheep first). This is the method recommended for that level.

Wow...thanks for the helps friends....regards

[Tang]

EN:

Hi Tang


I like your solution on qs 1. It's short and simple and the diagram helps.
I would like to try teaching my kids using your method but I'm a bit lost as to how to explain on certain portion.

I understand the top part but stuck in the following:

2 u --> 89 - 65 = 24

I understand where the 2u come from but how to explain why

89-65 =

TIA

The difference is 2 u.
And the difference between the 2 models is 89 - 65.

[wangsoon]

My son has school homework which I was not able to do without resorting to algebra. Hope you can help.


3 similar apples and 3 similar pears cost $7.50
5 apples and 4 pears cost $11.
What is the cost of 1 apple.

Any ideas?

[Tang]

wangsoon:

My son has school homework which I was not able to do without resorting to algebra. Hope you can help.


3 similar apples and 3 similar pears cost $7.50
5 apples and 4 pears cost $11.
What is the cost of 1 apple.

Any ideas?

7.50 / 3 = 2.50

2.50 x 4 = 10

11 - 10 = $1

The cost of 1 apple is $1.

[wangsoon]

Thanks. So simple. I am overly complicated!

[MoonFlower]

Ya, no algebra in P4. My ds told me a class boy was taught using that to solve but teacher did emailed saying not at this level. I agreed with the other parents, guess and check. Actually, i do feel that the children are using a more simple method just that at our times we were not taught and we don;t see it as what the children learn and see now. Parents got fed up and complaining it’s tough. I simply told my ds, please pay attention to yr teachers if not please approach them for help. School did told us to remind our children on this as I also worry not to confuse my ds.