Definitely not

nope. bar model is just for visual purposes, and saves time as compared to drawing other complicated diagrams

Anybody knows Sakamoto method?

Sakamoto is something like a line method... Which I normally used in solving before/after and change in between the lines...(similar to units/parts) Not really taught in school but I trained my daughter using something similar .. This is an example of Sakamoto's method (basic)

This is my method...a bit similar but more of tabulated form

The model method and Sakamoto method have the same idea: visualise information in clarity. Think of the rectangle models as expanded forms of lines.:)

How about using branching method?

My personal opinion is that the branching method is related from the model method. Because some of us can visualise the information clearly in our minds without much model drawing, the branches were used to represent the information clearly. Especially in problems related to 'remaining, a fraction of the remainder' etc.

Use fingers / thumbs to cover one teddy bear from each side. 1 Teddy bear = 2 giraffes. Therefore 3 teddy bears equal 6 giraffes.

I found a wonderful site with these kind of questions. https://solveme.edc.org/Mobiles.html

1 teddy bear = 2 giraffes. 3 teddy bears equal to 6 giraffes

Teddy bears??? I am sensitive to teddy bears..

Thanks so much!!!

nice! thanx for sharing

Shirley Lee

(a)

(b)

For question 11

Thanks Michelle Yap

Happy to help. 😊

How about the 2nd question?

Qn12 No's 1-9-> 9 digits No's 10-99-> 99-10+1=90x2=180 digits No's 100-150- > 150-100+1= 51x3=153 digits Total-> 9+180+153= 342 digits

Yes got it. Thanks everyone.