The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can acquire the skills of dealing with Math Modeling, Math Problem Solving and Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is a lower primary school math question on Problem sum.

You can read the posting on **Fatimah and Hairu play Congkak** to know about Congkak game.

Lower primary school mathematics question LPQ74

Fatimah has 410marbles in three different colours to use in the Congkak game. There are 3 times as many blue marbles than green marbles. There are total 42 red marbles. How many blue marbles are there?

* *Solution:

There are total 42 red marbles

The number of blue marbles plus green marbles = 410 – 42 = 368

Draw the Math Model

Per the model

4 units = 368

1 unit = 368 ÷ 4 = 92

The number of blue marbles = 3 × 92 = 276

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