This article focuses on solving a group of problem sums in PSLE Math whereby the value of a certain variable remains the same whether in the "Before" or "After" scenario. The strategies shared here are regularly used in schools and tuition centres as they can be applied across different topics with part-whole concepts like Decimals, Ratio, Fractions, Percentage and Whole Numbers.

Over the years, I have seen so many pupils struggling to cope with Math. No matter how much time they had put into this subject in school, at home with private tutors or in tuition centres, some pupils just could not seem to do well for it.

This is a very frequently used strategy in solving challenging PSLE Math problem sums. Questions that can be solved using this strategy appear almost every year in PSLE Math, whether as an MCQ or structured question. It is a strategy that every pupil must know!

How many times have you heard your child's Math teacher saying that your child would have done much better if he/she had read examination questions more carefully and avoided some common mistakes? It is frustrating for both parents and child when marks are lost in examinations unnecessarily.