Jacqueline Lau
Asked 7 years ago

SG chevron_right chevron_right

Thank you for adding me.

Replies 0

Jamie Lee
Asked 7 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 1

Edlynn Rose

Sharing an alternative approach where instead of representing parts as shaded and unshaded, I've replaced these with a letter and then making the comparison.

4 years ago

Jamie Lee
Asked 7 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 0

Jamie Lee
Asked 7 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 3

Meng Khim Goh

Vincent = 1u Ahmad = 4u Ryan = 4u - $12.80 Sum of three boys = 9u - $12.80 9u - $12.80 = $118.60 9u = $131.40 1u = $14.60 (ans)

4 years ago
Jamie Lee

thanks

4 years ago
Edlynn Rose

4 years ago

Jamie Lee
Asked 7 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 5

Goh Thsu Chuan

Aaron 120 Devi 180

4 years ago
Jamie Lee

appreciate it if you can provide the steps.

4 years ago
Kai Meng

At first, Aaron had 4u & Devi had 3p. 4u + 3p = 300 Aaron spent 3u, left 1u. Devi spent 2p, left 1p. 1u + 1p = 90 3u + 3p = 270 Comparing to the beginning equation, 1u = 30 & 4u = 120 So 1p = 60 & 3p = 180.

4 years ago
Choy Ban Heng

This is a solution using the Model Method. It is convenient to rep Aaron's amount using 4 units and Devi's using 3 units. (Note the units are different in this case). The idea is to group one unit of Aaron with one unit of Devi, and then eliminate multiples of 90 until one unit of Aaron is left. Because we know the total is 300, we can determine one unit of Aaron. See diagram.

4 years ago
Edlynn Rose

4 years ago