Cheah Hui Toh
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Measurement

Hi all, pls help to solve this P4 question. Many Tks.

Replies 12
Raymond Ng

6 years ago
Shirley Woon

primary 4 cannot use algebra :p

6 years ago
Zhong Shu Hao

Algebra is just writting word(s) as alphabets...

6 years ago
Shirley Woon

My P5 girl solved it this way.

6 years ago
Raymond Ng

Use reasoning then. Replace a & b with words can? ☺ Length of big square + breadth of small rectangle is 20cm So, it means that 2 Lengths of big square + 2 breadths of small rectangle is 40cm But as seen from the diagram, length of small square + 2 lengths of big square = 40cm Hence, length of small square is twice breadth of small rectangle. 4 breadths of small rectangle is 20cm. 2 breadths is 10cm. Hence, area = 10 × 10 = 100cm^2

6 years ago
Cheah Hui Toh

Tks all for your help😄

6 years ago
Hariani Salleh

Mine is more of how to explain to your kids using visual. :)

6 years ago
Cheah Hui Toh

Tks! Very clear!

6 years ago
Hariani Salleh

Not at all

6 years ago
Mei Ping

Very good, easy to be digested by kids

6 years ago
Hariani Salleh

Thank you

6 years ago
Kho Tek Hong

Let the breadth of a rectangle be x. Then by symmetry the side length of the shaded square is 2x. 4x=20 x=5 Therefore the area of the shaded square is 100cm^2

6 years ago
Zhong Shu Hao

Algebra is just writting word(s) as alphabets...

6 years ago
Cheah Hui Toh

Tks! Very clear!

6 years ago
Hariani Salleh

Not at all

6 years ago
Mei Ping

Very good, easy to be digested by kids

6 years ago
Hariani Salleh

Thank you

6 years ago

Adrian Ng
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Measurement

Making it visual...

Replies 0

Lawrence Zu Xin Wong
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

help needed again 😁

Replies 4
Yang Jie Hammy

Hope this helps..

6 years ago
Lawrence Zu Xin Wong

thanks yang

6 years ago
Caleb Tey

same thing, but slightly more pictorial

6 years ago
Hariani Salleh

6 years ago

Adrian Ng
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Making it visual...

Replies 0

Lawrence Zu Xin Wong
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Help needed to solve this qn, thank you very much.

Replies 6
Sheeba Navas

6 years ago
Sheeba Navas

Hope it helps

6 years ago
Lawrence Zu Xin Wong

thx for ur help, i can be panadol free for this hr

6 years ago
Andy Lim

A:C 1:4 U need to multiply this ratio by 4. Hence u will get A:C 4:16 Make the units of C same as B+G hence you'll get B:G 3:5 (x 2) 6:10 Therefore, M:B is 1:6 (ans) ------------- 10-6=4 4u ---> 132 1u ---> 132/4 = 33 Since W:G is 3:6 then children left will be B+G--->6+6=12u 12u---> 33x12=396 (ans)

6 years ago
Lawrence Zu Xin Wong

thx andy

6 years ago
Andy Lim

😊

6 years ago

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