Siti Norain Johari
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Need help pls, thanks..

Replies 1
Raymond Ng

6 years ago

Adrian Ng
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Fractions

Making it visual...

Replies 1
Stella Lee

Thanks

6 years ago

Adrian Ng
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Fractions

Making it visual...

Replies 1
Candy Chan

Thanks Adrian Ng! Your explanation is very clear....

6 years ago

Karen Ong
Asked 9 years ago

SG chevron_right Primary 3 chevron_right Number and Algebra

Hi all, can anyone help with the steps to solve this P3 qn? Thanks!

Replies 17
Zhong Shu Hao

use assumption method

6 years ago
Raymond Ng

6 years ago
Jade Er

Guess and check method

6 years ago
Kwang Huang Sim

6 years ago
Karen Ong

Thanks everyone!

6 years ago
Shuping Hao

Can P3 student use below equation set? If number of 20 cents coins is x, number of 50 cents coins is y, then, 20x + 50y = 760 (a) x + y = 20 (b) (b) x 20, get 20x + 20y = 400 (c) (a) - (c), 30y = 360 So, y=12

6 years ago
Zhong Shu Hao

Not really.... Teachers may mark the whole working as wrong, and only award ans marks

6 years ago
Shuping Hao

6 years ago
Karen Ong

Yes unfortunately, they haven't learnt algebra yet so they can't do it :(

6 years ago
Choy Ban Heng

Karen Ong, this is one way to represent the method of "assumption" or "supposition" using the model method. I think it may help in the visualisation process.

6 years ago
Karen Ong

This is a very neat and clear way of doing the problem. Thanks! I have to say that I wish I had been taught the supposition method when I was a kid so I can teach my son!

6 years ago
Victor Vincent

12 50 cents 8 20 cents

6 years ago
Wen Yang Lee

Can I suggest assuming equal number of 20 cent and 50 cent coins (10 each)? Then you know which way to go depending on whether total value is more or less than the final amount. Else will take much longer to arrive.

6 years ago
Zhong Shu Hao

it is about the same.

6 years ago
Jessica Ong

Use guess and check method

6 years ago
Hannah Sophia Yong Kee

Dxrren Yong

6 years ago
Phyllis Poh

I used guess and check method mentally. Since it's 20c and 50c coins only, the 60c part of $7.60 has to be made up of three 20c coins. But seventeen 50c = $8.50. So this is not the right combination. So next possible combination is $1.60 worth of 20c coins. This means there's eight 20c and twelve 50c coins. And this adds up to $7.60. Answer!

6 years ago

Stella Lee
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Fractions

Hi,allP5 qn, pls help,TIA.

Replies 3
Norizan Othman

Edited ...

6 years ago
Nandula Hema

6 years ago
Stella Lee

Thanks to all !

6 years ago

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