The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. You or your kids can learn dealing with Math modeling, Problem Sum from Lower Primary School to Upper Primary School level in Singapore school. This posting is a primary school math question on Math Modeling, Fraction and Problem Sum.
To read the posting on Sarin learns the concept of Fraction (mathematics concept) to understand the concept of Fraction.
Upper primary school mathematics question UPQ179
After Hairu gave away 4/7 of his stickers and Sarin gave away 1/2 of his stickers to their sister Fatimah, they had the same number of stickers left. The total number of stickers left was 312. How many stickers did Hairu give away?
Draw the model start with what they have than eliminate the fraction that given away
From the model
Left over sticker is 6 units
6 units = 312
1 unit = 52
Number of stickers that Hairu gave away 4 × 52 = 208