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 and Problem Solving.
You can click here and read the posting on A family in Singapore about Sarin’s family.
Upper primary school mathematics question UPQ161
Sarin, Hairu and Fatimah received $49 from their father as pocket money. Hairu received twice as much money as Sarin. Fatimah received twice as much money as Hairu. How much pocket money did Sarin receive?
Solve by drawing the math model based on the portions of money each received
If sarin received 1 unit of money then Hairu should received 2 units of money
If Hairu received 2 units of money then Fatimah shared should be 4 units.
Draw the model,
7 units = 49
1 unit = $7
Sarin’s pocket money is $7