# Hairu and the numbers part 25 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with Math Question Solving, Math Modeling and Problem Sums 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 and Number.

Read also the posting on Sarin learns concept of Fraction in school to understand the concept of Fraction.

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

Upper primary school mathematics question UPQ498

Hairu has a fraction in his mind. The denominator of this fraction is 6 more than its numerator. When Hairu add 4 to both the numerator and denominator, the fraction becomes 3/5.

What is the fraction that Hairu is thinking of?

Solution:

Per the model,

2 units = 6

1 unit = 3

The denominator = 3 × 3 – 4 = 5

The numerator = 5 × 3 – 4 = 11

The fraction = 5/11

Alternative solution:

The fraction of 3/5 = 6/10 = 9/15

9 – 4 = 5, 15 – 4 = 11

11 – 5 = 6

The fraction = 5/11