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

Read the posting on **Fatimah and Hairu play Congkak** to know about Congkak game.

Read the posting on **Sarin learns the concept of Fraction (mathematics concept)** to understand Fraction and Portion.

*Challenge yourself with the question before look for the given solution‼!*

**Upper primary school mathematics question UPQ395**

Fatimah had a set of marbles to use in the Congkak game. There were in three different colours. 3/7 of her marbles were green and 5/6 of the remainder were yellow. The rest of her marbles were blue. What fraction of her marbles

were blue?

* *Solution:

The fraction of his shirts were blue = 4/7 × 1/6 = 2/21

Alternative solution:

By using Math Model

3/7 fraction of the total were green marbles

The remaining marbles in fraction = 1 – 3/7 = 4/7

4/7 fraction of the total will need to subdivided to 24 portions

1/6 fraction of the remainder is 4 portions and equal to blue marbles

The fraction of his shirts were blue = 4/42 = 2/21

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