Recent Entries

Primary Maths: Problem Sum Solving with Sakamoto Method...

Have you heard of the Sakamoto Method for solving Primary School Maths sums? I have not, so it was a pleasant surprise when I chanced upon it while searching the Internet for Mathematics-related information. To me, the Sakamoto Method appears to be very interesting, because it takes quite a novel approach to problem solving, employing easy-to-understand logic and simple line diagrams. It’s a bit like Models, but takes it much further without making things mind-boggling. Note: I don’t know...

[Intl] Problem Sum No. 4: Prime Factorization

What prime numbers have the product of 111111? Asked by Rebecca C Date: 21 March 2013 Source: International School; Gifted Math Program, Grade 5 Variety is the spice of life. Without different things to do, we may just die of boredom. So it is the same with Mathematics — explore and learn about different Maths topics to keep interest in the subject alive. That’s my personal but serious opinion; tell me if you agree or disagree in the “Leave...

[P2] Problem Sum No. 3: Mr and Mrs Chan’s Weights

Mr Chan has a mass of 75kg. Mrs Chan weighs 16kg less than Mr Chan. (a) What is the mass of Mrs Chan? (b) What is the total mass of Mr and Mrs Chan? Asked by Mark Heng; taken from his son’s school work Date: 17 May 2013 Source: St. Gabriel’s Primary, P2 Maths questions involving people’s weight, height and age are quite common. Typically, one person will be used as a measurement reference point while each of the...

[P2] Problem Sum No. 2: Children and Sweets

Mrs Lim gave 18 sweets to some children. If each child received 2 sweets, how many children were there? Asked by Mark Heng; taken from his son’s school work Date: 17 May 2013 Source: St. Gabriel’s Primary, P2 Sweets work wonders on children. Just look at the glow on a child’s face when he or she is given some candy. For all the parents reading this, I’m sure it brings back sweet childhood memories as well 😉 Without question,...
[Teaser] Curry Rice Meals — Is There A Best Deal?

[Teaser] Curry Rice Meals — Is There A Best Deal?

Study the price list of curry rice meals below: Which meal do you think gives the best value for money? Asked by Mark Heng Date: 16 May 2013 Source: No Problem Sums This is what I call the “Chap Chye Png” (in Hokkien; 什菜饭 in Chinese) puzzle. The prices...

Practical Steps for Problem Sum Solving with Models

Tackling problem sums using models can be a hazardous affair for the uninitiated. Some people are put off by those usually wordy Math questions, which seem to be one hurdle to applying models. Here, a poor command of English can trip up the student trying to understand what is being asked. How to picture the problem and draw the correct model diagram seems to be another hurdle. Failure to pick an appropriate model++ means relationships between items given in...