Q&A - PSLE Math
-
Lizawa
No wonder someone said it is a test of stamina.
Last yr P4, in one paper, some students couldn’t finish. I even told my girl to start doing the 2nd part first. But her classmate’s mother told me tuition teacher said better to do 1st part first as human brain works from easy to difficult - train / gear the brain towards 2nd part.
Next yr, split into 2 papers, I believe it is on same day, different time. -
Hi,
The topic rate is removed this year and speed will be removed next year.
For Paper 1 ~ 50min for 15MCQ and 15 short questions.
For Paper 2 ~ 1h 40min for 5 ‘short’ and 13 ‘long’ questions.
I think the time for paper 1 is a bit short. Or maybe my kid is tooo slowly, he has sufficient time for paper 2.
How do you use Andrew Er’s book to teach? By doing the sums?
Is it a guide book?
Is there any guide book for parents to read?
thanks. -
I was recommended Maths practice books by Li Fanglan but am curious about Andrew Er books. Has anyone compared them?
-
Sarah
Where did you get the info that rate & speed has been / would be removed? From MOE website on the topics?
I do notice that rate & speed sums are not as many as fractions, ratios, pecentages & whole numbers.
50 min for paper 1 = 1 min per MCQ & 2 min per short question, left 5 min for checking.
100 min for paper 2 = 3 min per short question and 6 min per long question, left 7 min for checking
Not only the children have to think fast, they also have to write fast. They have to practise speed from P4. -
P5 Maths question - (from Nan Hua Primary School)
Evan and Lionel hada total of 72 marbles. Evan gave 1/3 of his marbles to Lionel. Lionel then gave 2/5 of the total number of marbles he had to Evan. In the end, each of them had the same number of marbles. How many marbles did Lionel have at first? -
Please click the link below for the solution using model diagrams:
http://i3.photobucket.com/albums/y74/miamia2004/P5Math20081014.jpg -
How about this one, This is from oldschool test papers P5 math 2008
Four boys, Alex, Bryan, Calvin and Derrick, each have some stamps. The number of stamps Alex has is 1/2 of the total number of stamps Bryan, Calvin and Derrick have. The number of stamps Bryan has is 1/3 of the total number of stamps Alex, Calvin and Derrick have. The number of stamps Calvin has is 1/4 of the total number of stamps Alex, Bryan and Derrick have. If Derrick has 78 stamps, find the total number of stamps Alex and Bryan have altogether.
The answer is 210 -
cutemum:
You can use ratio to solve this question.How about this one, This is from oldschool test papers P5 math 2008
Four boys, Alex, Bryan, Calvin and Derrick, each have some stamps. The number of stamps Alex has is 1/2 of the total number of stamps Bryan, Calvin and Derrick have. The number of stamps Bryan has is 1/3 of the total number of stamps Alex, Calvin and Derrick have. The number of stamps Calvin has is 1/4 of the total number of stamps Alex, Bryan and Derrick have. If Derrick has 78 stamps, find the total number of stamps Alex and Bryan have altogether.
The answer is 210
A : B+C+D
= 1: 2
= 20: 40
B: A+C+D
= 1:3
= 15:45
A+B+D
=1:4
=12:48
First step is to make all the \"total units\" equal. So the common multiple of 3 (1+2), 4 (1+3) and 5 (1+4) is 60.
A+B = 20+15 = 35 units.
From A+B+D = 12:48
D = 48 - 35 = 13 units.
Since D has 78 stamps,
13 units = 78
1 unit = 6 stamps
A+B = 35 units = 35 *6 = 210 stamps. -
ks2me:
I always get brain damage trying to figure out models. :oops:
Please click the link below for the solution using model diagrams:
http://i3.photobucket.com/albums/y74/miamia2004/P5Math20081014.jpglizawa:
...
First step is to make all the \"total units\" equal. So the common multiple of 3 (1+2), 4 (1+3) and 5 (1+4) is 60.
... That's the missing link I was looking for. Thanks for the enlightenment, lizawa. *clap*clap*clap*
-
heutistmeintag:
You are welcome. The most difficult part is always to identify the relationship among all the given numbers. Once you get that, the rest is a breeze.
That's the missing link I was looking for. Thanks for the enlightenment, lizawa. *clap*clap*clap*
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login