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 Problem Sum.
Challenge yourself with the question before look out for the given solution‼!
Upper primary school mathematics question UPQ447
Hairu had 140 stickers more than Fatimah. If Hairu gave Fatimah 20 stickers, he would have three times as many stickers as Fatimah. How many stickers did Hairu have at first?
Draw the model
Hairu given 20 stickers and he has 3 time as many stickers as Fatimah
2 units = 140 – 20 – 20 = 100
1 unit = 50 stickers
The number of stickers that Hairu has at first = 3 × 50 + 20 = 170