P2 Math - General Discussion

[Yong HL]

janet_lee88:

Yong HL:

i also came across the following P1 question:

Adam and Mark caught 19 crabs altogether. How many more crabs did Adam catch than Mark if Mark caught caught 8 crabs.

For me, i have to read this question at least twice before understanding it. Let alone a P1 kid...

So that means 19-8 right ? To find out how many crabs Adam caught.
Good gracious, how would P1 kids know they have to subtract ? :siao:
I have to remind myself that 'many more than' doesn't mean addition.
This play for words is too much for P1s to digest. :stompfeet:

Adam + Mark = 19 crabs
Mark = 8 crabs
Adam = 19-8 = 11 crabs
So, Adam caught 3 more crabs (11-8) than Mark.
My girl couldnt do this question and i didnt \"force\" her to must-know it. This is too much. I was :mad: when i see such questions.

[janet88]

poppy15:

i am not looking forward to 2012 if i hv to teach my DS maths this way....



hopefully DH can take over instead, otherwise, i will scream as i dun hv the patience to teach :oops:

I don't even understand P1 Maths problems...scratching my head the whole time as I read the question about the crabs :scratchhead: We were at City Sq just now and brought hubby to see that Maths book. He said the book is not bad and will use it to teach daughter. http://i54.tinypic.com/1zvy17b.jpg\">

[corneyAmber]

poppy15:

ksi:

http://i54.tinypic.com/ja8g2u.jpg\">

ksi, u are an expert in both model drawing & problem solving.. can u be my tutor instead?

:udawoman:

Aiyo poppy, don't make me blush.. :oops: :oops: :oops: , there are many experts here. I am just a mummy trying to help my baby. If your child has a problem in Math, just post, I will help to solve. After looking at a few solutions, you can master it too.

[poppy15]

janet_lee88:

I don't even understand P1 Maths problems...scratching my head the whole time as I read the question about the crabs :scratchhead:

janet_lee88, that maths problem i can understand, but it will be a problem if i hv to get my DS to understand as well... dunno if he knows or not :scratchhead:

teacher in his K2 class js feedback to me he gets confused between more than & less than... aiyoooooooo :faint:

[poppy15]

ksi:

Aiyo poppy, don't make me blush.. :oops: :oops: :oops: , there are many experts here. I am just a mummy trying to help my baby. If your child has a problem in Math, just post, I will help to solve. After looking at a few solutions, you can master it too.

kekekekek... u will see me more often here (actually i hope not) in this thread next yr once my DS enters P1 & :imdrowning:

then i will keep pressing :?: :?: :?:

[Yong HL]

poppy15:

teacher in his K2 class js feedback to me he gets confused between more than & less than... aiyoooooooo :faint:

Hi poppy15
This is common among K2/P1 kids. I faced the same problem with my P1 girl also and started a thread asking parents here for advise.
http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=7&t=19179

[poppy15]

Yong HL:

poppy15:

teacher in his K2 class js feedback to me he gets confused between more than & less than... aiyoooooooo :faint:

Hi poppy15
This is common among K2/P1 kids. I faced the same problem with my P1 girl also and started a thread asking parents here for advise.
http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=7&t=19179

:thankyou: Yong HL

after looking thru that thread, its still doesnt reveal the answer :oops:

a) 2 is ___ less than 10
b) 3 is 4 less than ____

so i read over & over again (read: slow digestion) & after cracking my brains, can i finally say the answer is as follows:

a) 8
b) 7

(a) we use subtraction & (b) we use addition but how can we teach the kids using K2/P1's language

looks like i got to prepare a list of sums & get DS to do it, then slowly try & explain to him...

[PiggyLalala]

Solving questions on 'more than' and 'less than' sums


Type 1
_______ is 5 less than 12.
Cover up 5. The question will then be read as ______ is less than 12. Therefore _____is the smaller number. To find the smaller number, we always need to subtract. The answer is then 12 - 5 = 7.

Similarly
_______ is 2 more than 12
Cover up 2 again. The question will then be read as ______ is more than 12. Therefore ____ is the bigger number. To find the bigger number, we always need to add. The answer is then 12 + 2 = 14.

Type 2
3 is 4 less than ____
Cover up 4. The question will then be read as 3 is less than ______. Therefore 3 is the smaller number and ______ is the bigger number. To find the bigger number, we always need to add. Therefore the answer is 3+ 4 = 7

10 is 6 more than _____
Similarly cover up 6. The question will then be read as 10 is more than ______. Therefore 10 is the bigger number and ______ is the smaller number. To find the smaller number, we always need to subtract. Therefore the answer is 10 -6 = 4

Type C
2 is ___ less than 10.
In this question, we are comparing the 2 numbers, 2 and 10. 2 is less than 10 but by how much? To find the answer, we use the bigger number minus the smaller number, that is, 10 - 2 = 8.

10 is ______ more than 4.
In this question, we are comparing the 2 numbers, 10 and 4.
10 is more than 4 but by how much? To find the answer, we again use the bigger number minus the smaller number, that is, 10 - 4 = 6.

Hope you can understand my solution...

[poppy15]

PiggyLalala:

Solving questions on 'more than' and 'less than' sums

wow PiggyLalala, tks for the solution. haha.. gt to print out these examples & keep them for reference. (scare wait i lost this thread)

:thankyou: PiggyLalala

[PiggyLalala]

You are welcome.