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, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids will learn the skills of dealing with the Math Problem Solving, the Math Modeling 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 and Problem Sum.

You can read the posting on **Sarin learns the concept of Fraction (mathematics concept)** to understand the concept of Fraction or Portion.

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

**Upper primary school mathematics question UPQ420**

Hairu had a stack of stickers. He gave 1/5 of the stickers to Sarin and 2/3 of the remaining stickers to Fatimah. If Hairu had 24 stickers left, how many stickers did he have at first?

Solution:

Starts with drawing a sticker distribution flow based on fraction of Hairu’s stickers go to.

To note that Fatimah’s stickers are from the remaining of Hairu’s stickers

The flow diagram:

Work out the number of remaining stickers,

1 unit = 24

The number of remaining stickers = 3 × 24 = 72

The remining stickers are 4/5 fraction of the total number (Hairu) of stickers

4 units = 72

1 unit = 18

The number of stickers that Hairu has at first = 5 × 18 = 90

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